JP6460807B2 - Device ID assignment system - Google Patents

Description

  The present invention relates to a device ID assignment system that automatically assigns IDs (identification numbers) to a plurality of devices connected via a communication line.

  In the automatic ID assignment method for network devices described in Patent Document 1 (Japanese Patent No. 2959403), each port has a management data line for communicating management information different from the data line through which the packet passes. A master LAN device having communication means for assigning an ID number to a connected LAN device, and a host LAN that can be connected to the management data line, for each port; Device connection port, lower LAN device connection port connectable to lower LAN device management data line, register for storing ID, and transmission destination ID included in data from management data line Detecting means, means for comparing the ID of the detected transmission destination with the ID of the register, and for connecting the upper LAN device according to the comparison result A means for controlling connection or disconnection between a port and a lower LAN device connection port, a means for storing data from the management data line until an ID is detected, and a means for sequentially transmitting the stored data after detecting the ID. The slave LAN device is configured with a plurality of slave LAN devices that can be connected to each port of the master LAN device, and the ID of the slave LAN device that is not assigned an ID is larger than the number of slave LAN devices that can be connected to the register as an initial value. And the management data line of the upper LAN device connection port and the lower LAN device connection port are separated, and the master LAN device refers to the connection number table for each port and identifies the ID for identifying the slave LAN device. The number is sent to the management data line as an ID assignment command signal, and the slave LAN device assigns the ID assignment Receiving the command signal, detecting the ID of the transmission destination in the process of receiving the management data and comparing it with the ID of the register. If the ID of the transmission destination is smaller, the received ID number is set as the self ID. And the self ID assignment confirmation signal is transmitted to the master LAN device through the upper LAN device connection port, and if the comparison result shows that the destination ID is larger, the upper LAN device connection port and the lower LAN device connection Connect the management data line of the port, send the management data to the lower LAN device connection port, and the master LAN device that has received the self ID assignment confirmation signal updates the connection number table of that port and identifies the slave LAN device. An ID assignment command signal including another ID number for the ID is transmitted to the management data line, and the self ID is assigned. The slave LAN device assigns the ID number of each slave LAN device by repeating the operation of transmitting to the lower port.

Japanese Patent No. 2959403

  In the configuration of Patent Document 1, the configuration and control for assigning IDs to a plurality of devices connected via a communication line are complicated, and accordingly, the frequency of troubles increases, and the cause of troubles at the time of troubles is difficult to investigate. There was a drawback that the degree was high.

  Therefore, the problem to be solved by the present invention is to provide a device ID assignment system capable of simplifying the configuration and control for assigning IDs to a plurality of devices connected by a communication line.

In order to solve the above-described problems, the present invention provides an apparatus for assigning IDs to a plurality of devices connected via a communication line, and an ID assignment input port and an ID assignment output for each of the plurality of devices. In addition to providing a port, an ID allocation output port of each device and an ID allocation input port of each device are connected by an ID allocation I / O line, and the plurality of devices are connected to the ID allocation I / O. The control unit of each device assigns IDs to the plurality of devices in order based on the input level of the ID assignment input port of each device, and inputs its own ID assignment after power-on. Based on the input level of the port, the first device that has no other device connected to its input port for ID assignment, or the second device or later If it is determined that the device is the first device, the first device ID is assigned to its own ID and an ID assignment start command is transmitted to the second and subsequent devices via the communication line. When it is determined that the device is a device subsequent to the ID, when the ID allocation start command is received, the ID of the device connected to the input port for ID allocation based on the input level of the input port for ID allocation Device ID allocation that assigns IDs in order to the second and subsequent devices by repeating the process of assigning the next ID to its own ID and sending an ID assignment start command to other devices via the communication line In the system, the plurality of devices are simultaneously turned on, and the control unit of each device outputs the output level of the ID allocation output port of each device when the power is turned on. Inverting from low level to high level, after completing the ID allocation of itself, the output level of its own ID allocation output port is inverted to low level. When the input level of the input port for allocation is at a low level and the ID allocation start command is received, the ID in the next order of the ID of the device connected to the input port for ID allocation of itself is set. In addition to assigning the ID, the ID assignment completion command is transmitted to the other device after the completion of the assignment of the own ID through the communication line. When the ID assignment complete command is not received, the last device to which no other device is connected to its own ID assignment output port A device ID assignment completion command is transmitted to other devices via the communication line by judging that the device is the device, and the ID assignment processing for all devices is completed .

  In the present invention, a plurality of devices are daisy-chain connected by ID allocation I / O lines, and IDs are sequentially allocated to the plurality of devices based on the input level of the ID allocation input port of each device by the control unit of each device. Therefore, the configuration and control for assigning IDs to a plurality of devices connected via a communication line can be simplified.

FIG. 1 is a block diagram showing a hardware configuration of a device ID assignment system according to an embodiment of the present invention. FIG. 2 is a diagram showing a processing flow of the device ID assignment system. FIG. 3 is a flowchart (part 1) showing the flow of processing of the device ID assignment program executed by the control unit of each device. FIG. 4 is a flowchart (part 2) showing the flow of processing of the device ID assignment program executed by the control unit of each device.

  Hereinafter, an embodiment embodying a mode for carrying out the present invention will be described.

  First, the hardware configuration of the device ID assignment system of this embodiment will be described with reference to FIG.

  In this embodiment, an example in which the communication ports 4 to 6 of the three devices 1 to 3 are connected to each other via the communication line 11 will be described. However, the number of connected devices is not limited to three, and 2 Needless to say, the number of units may be four or more. Each of the devices 1 to 3 is a device that needs to be assigned an ID, such as a motor control unit mounted on a component mounter or an actuator control unit other than a motor.

  The devices 1 to 3 are provided with ID allocation input ports IN1 to IN3 and ID allocation output ports OUT1 to OUT3, respectively. The ID allocation output ports OUT1 and OUT2 of each device 1 and 2 and the ID allocation input ports IN2 and IN3 of each device 2 and 3 are connected by ID allocation I / O lines 12 and 13, respectively. 1 to 3 are connected in a daisy chain connection manner by ID allocation I / O lines 12 and 13.

  As shown in FIG. 2, each of the control units 7 to 9 of the devices 1 to 3 includes a microcomputer as a main body and executes a device ID assignment program shown in FIGS. Based on the input levels of the ID assignment input ports IN1 to IN3 of the devices 1 to 3, IDs are assigned to the three devices 1 to 3 in order.

  The three devices 1 to 3 are configured to be powered on simultaneously when the component mounting machine is powered on. The control units 7 to 9 of the devices 1 to 3 start the device ID assignment process by starting the device ID assignment program of FIGS. 3 and 4 when the power is turned on, and the three devices 1 to 3 as follows. IDs are assigned in order. When the program is started by turning on the power, the control units 7 to 9 of the devices 1 to 3 first change the output of the ID allocation output ports OUT1 to OUT3 from low (low level) to high (high) in step 101. Invert to level). As a result, the outputs of the ID assignment output ports OUT1 to OUT3 of the three devices 1 to 3 are inverted to High simultaneously with power-on.

  Thereafter, the control units 7 to 9 of the devices 1 to 3 proceed to step 102, and determine whether the first unit (the head of the daisy chain connection) depends on whether or not the input of its own ID allocation input ports IN1 to IN3 is Low. ) Or the second and subsequent devices 2 and 3. Since the ID assignment input port IN1 of the first device 1 is not connected to the ID assignment output ports OUT2 and OUT3 of the other devices 2 and 3, the ID assignment of the first device 1 is performed even after the power is turned on. The input of the input port IN1 is kept low, but the ID assignment input ports IN2 and IN3 of the second and subsequent devices 2 and 3 have ID assignment output ports OUT1 and OUT2 of the other devices 1 and 2, respectively. Since they are connected, the inputs to the ID assignment input ports IN2 and IN3 of the second and subsequent devices 2 and 3 are inverted to High simultaneously with power-on.

  Therefore, the control unit 7 of the first device 1 determines “Yes” in the above step 102 because the input of the ID assignment input port IN1 is kept low even after the power is turned on. , The processing of steps 103 to 110 is executed as follows. The control unit 7 of the first device 1 first transmits an ID allocation start command to the second and subsequent devices 2 and 3 using the communication line 11 in step 103 (first ID allocation start command). Send).

  Thereafter, the control unit 7 of the first device 1 proceeds to step 104, assigns the first ID (ID_1) to its own ID, and then proceeds to step 105 to determine the ID of the first device 1. The output of the allocation output port OUT1 is inverted to Low. As a result, the input of the ID assignment input port IN2 of the second device 2 is inverted to Low.

  Thereafter, the control unit 7 of the first device 1 proceeds to step 106 and transmits an ID assignment start command to the second and subsequent devices 2 and 3 using the communication line 11 (start of second ID assignment). Command transmission). Thereafter, the control unit 7 of the first device 1 proceeds to step 107 and ignores the ID allocation start commands from the second and subsequent devices 2 and 3.

  Thereafter, the control unit 7 of the first device 1 proceeds to step 108, and after the ID allocation process of the second device 2 elapses from the completion of its own ID allocation, It is determined whether an ID allocation completion command has been received from the device 2. Here, if the control unit 7 of the first device 1 does not receive the ID assignment completion command from the second device 2 before the predetermined time elapses, is the second device 2 connected ( This means that the device 2 is disconnected or the ID assignment function of the second device 2 is not operating normally. If it is determined that the control unit 7 of the first device 1 has not received the ID allocation completion command from 2, the process proceeds to step 110, and the device ID allocation process is terminated. In this case, a connection error of the second device 2 may be displayed on a display device (not shown) to prompt the operator to confirm the connection of the second device 2.

  If it is determined in step 108 described above that the control unit 7 of the first device 1 has received an ID assignment completion command from the second device 2 until the predetermined time elapses, the process proceeds to step 109, where the daisy chain connection is established. The control unit 7 of the first device 1 receives the last device ID assignment completion command transmitted on the communication line 11 after the completion of ID assignment of the third device 3 which is the last device (end) of the first device. Wait until. Thereafter, when the control unit 7 of the first device 1 receives the last device ID assignment completion command, the process proceeds to step 110, and the device ID assignment process is terminated.

  On the other hand, the control units 8 and 9 of the second and subsequent devices 2 and 3 determine “No” in step 102 because the inputs of the ID assignment input ports IN2 and IN3 are inverted to High at the same time as the power is turned on. Then, it recognizes that it is the second and subsequent devices 2 and 3, and executes the processing after step 111 in FIG. 4 as follows. The control units 8 and 9 of the second and subsequent devices 2 and 3 first ignore the first ID assignment start command transmitted from the first device 1 in step 111.

  Thereafter, the control units 8 and 9 of the second and subsequent devices 2 and 3 proceed to step 112 to determine whether or not the input of their own ID allocation input ports IN2 and IN3 is Low. Until the ID assignment of the first device 1 is completed, the input of the ID assignment input ports IN2 and IN3 of the second and subsequent devices 2 and 3 are maintained High, so the ID assignment input ports IN2 and IN2 The process waits at step 112 until the input of IN3 is inverted to Low.

  Thereafter, when the ID assignment of the first device 1 is completed, the output of the ID assignment output port OUT1 of the first device 1 is inverted to Low, and therefore the ID assignment input port IN2 of the second device 2 Is inverted to Low. At this stage, the input of the ID assignment input port IN3 of the third device 3 is kept High.

  When the ID assignment of the first device 1 is completed and the input of the ID assignment input port IN2 of the second device 2 is inverted to Low, the control unit 8 of the second device 2 performs the above steps. 112 is determined as “Yes”, the process proceeds to step 113, and the second ID (ID_2) increased in accordance with the number of reception of the ID allocation start command (two times at this time) is allocated to its own ID. At this time, the ID may be increased by 1 according to the number of times the ID allocation start command is received, or may be increased by 2 or more.

  Thereafter, the control unit 8 of the second device 2 proceeds to step 114 and transmits an ID assignment completion command to the first device 1 which is the previous device using the communication line 11. Proceeding to step 115, the output of the ID assignment output port OUT2 of the second device 2 is inverted to Low. As a result, the input of the ID assignment input port IN3 of the third device 3 is inverted to Low.

  Thereafter, the control unit 8 of the second device 2 proceeds to Step 116 and transmits an ID assignment start command to the other devices 1 and 3 using the communication line 11 (third ID assignment start command transmission). . Thereafter, the control unit 8 of the second device 2 proceeds to Step 117 and ignores the ID allocation start command transmitted from the other devices 1 and 3.

  Thereafter, the control unit 8 of the second device 2 proceeds to step 118, and after the ID allocation process of the third device 3 has passed a predetermined time sufficient for the ID allocation processing of the third device 3, It is determined whether or not an ID allocation completion command has been received from the device 3. If the ID assignment of the third device 3 is normally completed, the control unit 8 of the second device 2 receives the ID assignment completion command from the third device 3 before the predetermined time elapses. In step 118, it is determined as “Yes”, and the process proceeds to step 120, where the last device ID assignment completion command transmitted on the communication line 11 after completion of ID assignment of the third device 3 as the last device is issued. It waits until the control part 8 of the 2nd apparatus 2 receives. Thereafter, when the control unit 8 of the second device 2 receives the last device ID assignment completion command, the process proceeds to step 121, and the device ID assignment process is terminated.

  On the other hand, if the control unit 8 of the second device 2 does not receive the ID assignment completion command from the third device 3 before the predetermined time elapses, is the third device 3 connected? (The device 3 is disconnected) or the ID assignment function of the third device 3 is not operating normally. If the control unit 8 of the second device 2 determines that the ID allocation completion command has not been received from the device 3, the control unit 8 of the second device 2 proceeds to step 119 and uses the communication line 11. Then, after the last device ID assignment completion command is transmitted to the other devices 1 and 3, the process proceeds to step 121, and the device ID assignment process is terminated. In this case, only the IDs of the two devices 1 and 2 are allocated, the ID of the third device 3 is not allocated, and the ID allocation process is completed, so that the display device (not shown) 3 A connection error of the third device 3 may be displayed to prompt the operator to confirm the connection of the third device 3.

  On the other hand, when the ID assignment of the second device 2 is completed and the input of the ID assignment input port IN3 of the third device 3 is inverted to Low, the control unit 9 of the third device 3 It is determined as “Yes” in the above step 112, and the process proceeds to step 113, in which the third ID (ID_3) increased according to the number of reception of the ID allocation start command (three times at this time) is set as its own ID. Assign. At this time, the ID may be increased by 1 according to the number of times the ID allocation start command is received, or may be increased by 2 or more.

  Thereafter, the control unit 9 of the third device 3 proceeds to step 114 and transmits an ID assignment completion command to the second device 2 which is the previous device using the communication line 11. Proceeding to step 115, the output of the ID assignment output port OUT3 of the third device 3 is inverted to Low. Thereafter, the control unit 9 of the third device 3 proceeds to step 116 and transmits an ID assignment start command to the other devices 1 and 2 using the communication line 11, and then proceeds to step 117. The ID assignment start command transmitted from the devices 1 and 2 is ignored.

  Thereafter, the control unit 9 of the third device 3 proceeds to step 118, and until the next predetermined time necessary for the ID allocation processing of the next device (after one) elapses from the completion of its own ID allocation. It is determined whether an ID assignment completion command has been received from the device. In the present embodiment, since the third device 3 is the last device and the fourth and subsequent devices are not connected, the control unit 9 of the third device 3 must wait until a predetermined time elapses. Does not receive ID assignment complete command. Accordingly, the control unit 9 of the third device 3 determines “No” in Step 118 described above, recognizes that the third device 3 is the last device, and proceeds to Step 119. After transmitting the last device ID assignment completion command to the other devices 1 and 2 using the communication line 11, the process proceeds to step 121, and the device ID assignment process is terminated. Thereby, the ID allocation processing of all the devices 1 to 3 is completed. The control device (not shown) of the component mounting machine identifies each device 1 to 3 based on the ID assigned to each device 1 to 3 and sends a control signal to the control units 7 to 9 of each device 1 to 3. Output.

  When four or more devices are connected, the control units of the fourth and subsequent devices may execute the processing after step 111 in FIG. 4 in the same manner as the control unit of the third device.

  According to the present embodiment described above, a plurality of devices 1 to 3 are daisy chain connected by the ID allocation I / O lines 12 and 13, and the devices 1 to 3 are controlled by the control units 7 to 9 of the devices 1 to 3. In order to assign IDs to the plurality of devices 1 to 3 connected by the communication line 11, since the IDs are sequentially assigned to the plurality of devices 1 to 3 based on the input levels of the ID assignment input ports IN1 to IN3. It is possible to simplify the configuration and control of the system, and the frequency of trouble occurrence is reduced, and the cause of trouble occurrence can be easily determined.

  Furthermore, in the present embodiment, the control units 7 to 9 of the devices 1 to 3 set their own ID allocation input ports IN1 to IN3 based on the input levels of their ID allocation input ports IN1 to IN3 after the power is turned on. When the first device 1 to which no other device is connected or the second and subsequent devices 2 and 3 is determined and the first device 1 is determined, the first device ID is When an ID is assigned to an ID and an ID assignment start command is transmitted to the second and subsequent devices 2 and 3 via the communication line 11, and the second and subsequent devices 2 and 3 are determined, the ID assignment start command is received. Then, based on the input level of its own ID allocation input ports IN2 and IN3, the ID in the next order of the IDs of the devices 1 and 2 connected to its own ID allocation input ports IN2 and IN3 is set as its own ID. Allocation and said The ID to said second and subsequent devices 2,3 by repeating the process of transmitting the ID allocation start command to another device and to allocate sequentially in Shin line 11. As a result, IDs can be automatically assigned to the second and subsequent devices 2 and 3 in order.

  Further, in the present embodiment, the plurality of devices 1 to 3 are simultaneously turned on, and the control units 7 to 9 of the devices 1 to 3 receive the ID assignment output ports OUT1 of the devices 1 to 3 when the power is turned on. The output level of ~ OUT3 is inverted from low level to high level, and the output level of its own ID allocation output ports OUT1 to OUT3 is inverted to low level after completion of its own ID allocation. When the output level of the ID assignment output ports OUT1 to OUT3 of the devices 1 to 3 is inverted from the high level to the low level, the other devices can also know that the ID assignment of the devices 1 to 3 has been completed. .

  In the present embodiment, the control units 8 and 9 of the second and subsequent devices 2 and 3 are in a state where the input levels of their own ID allocation input ports IN2 and IN3 are low (that is, their own When the ID allocation start command is received in a state where the ID allocation of the devices 1 and 2 connected to the ID allocation input ports IN2 and IN3 is completed), the ID allocation input ports IN2 and IN3 are connected. The ID in the next order after the IDs of the devices 1 and 2 is assigned to its own ID. As a result, IDs can be automatically assigned to the second and subsequent devices 2 and 3 in order.

  In the present embodiment, the control units 8 and 9 of the second and subsequent devices 2 and 3 transmit an ID assignment completion command to other devices via the communication line 11 after completion of their own ID assignment, When an ID allocation completion command is not received from another device even after a predetermined time sufficient for ID allocation processing has elapsed since the completion of allocation, the other device is not connected to its own ID allocation output ports OUT2 and OUT3. The final device ID assignment completion command is transmitted to the other devices 1 and 2 through the communication line 11 by determining that the device is the tail device 3, and the ID assignment processing of all the devices 1 to 3 is completed. As a result, the last device 3 can be accurately determined, and the ID allocation processing for all the devices 1 to 3 can be completed.

  Further, in the present embodiment, the control units 8 and 9 of the second and subsequent devices 2 and 3 assign the IDs increased by +1 to the IDs included in the ID assignment start command to their own IDs. An ID incremented by +1 can be automatically assigned to each of the second and subsequent devices 2 and 3.

  The present invention can be applied to various devices as long as the system automatically assigns IDs to a plurality of devices connected via a communication line, and the plurality of devices are mounted in one apparatus. For example, a plurality of devices may be mounted on a component mounter.

  The present invention is not limited to a device mounted on a component mounter, and can be applied to various devices as long as the system automatically assigns IDs to a plurality of devices connected via a communication line. Needless to say, various modifications can be made without departing from the gist of the invention, such as being applicable to ID assignment of a plurality of devices not mounted on a single device.

  DESCRIPTION OF SYMBOLS 1-3 ... Apparatus, 4-6 ... Communication port, 7-9 ... Control part, 11 ... Communication line, 12, 13 ... ID allocation I / O line, IN1-IN3 ... ID allocation input port, OUT1-OUT3 ... Output port for ID assignment

Claims (3)

In a device ID assignment system that automatically assigns IDs to a plurality of devices connected via a communication line,
Each of the plurality of devices is provided with an input port for ID allocation and an output port for ID allocation, and for the plurality of devices, an ID is allocated between the output port for ID allocation of each device and the input port for ID allocation of each device. A plurality of devices connected in a daisy chain via the ID allocation I / O line,
The control unit of each device sequentially assigns IDs to the plurality of devices based on the input level of the ID assignment input port of each device, and based on the input level of its own ID assignment input port after power-on. If it is determined whether it is the first device or other devices after the other device is not connected to its own ID assignment input port, and it is determined as the first device, the first device ID Is assigned to its own ID and an ID assignment start command is transmitted to the second and subsequent devices on the communication line, and when it is determined as the second and subsequent devices, when the ID assignment start command is received, Based on the input level of its own ID allocation input port, the ID in the next order of the ID of the device connected to its own ID allocation input port is allocated to its own ID, and other communication is performed on the communication line. Vessels to assign the ID to the second or successive devices by repeating the process of transmitting the ID allocation start command in order and a device ID assignment system,
The plurality of devices are simultaneously turned on,
The control unit of each device inverts the output level of the output port for ID allocation of each device from low level to high level upon power-on, and lowers the output level of its own ID allocation output port after completion of its own ID allocation. Flip to level,
When the control unit of each of the second and subsequent devices receives the ID allocation start command while the input level of its own ID allocation input port is at a low level, its own ID allocation input The ID in the next order of the ID of the device connected to the port is assigned to its own ID, and after completion of its own ID assignment, an ID assignment completion command is transmitted to the other device via the communication line. When the ID allocation completion command is not received from another device even after a predetermined time sufficient for the allocation process, it is determined that the other device is not connected to its own ID allocation output port. and characterized in that ends the ID allocation process of all devices by sending a last device ID assignment completion command to other devices in the communication line Device ID allocation system that. The control unit of each device in the second and subsequent, the device ID assignment system according to claim 1, characterized in that assigned the ID is increased +1 ID included in the ID assignment start command to its own ID. 3. The device ID assignment system according to claim 1, wherein the plurality of devices are mounted on a component mounter.

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