Quickstart Guide: Explicit Messaging between Mitsubishi iQR and Omron (EN)

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Section 1: Introduction This document will allow the user to setup an Explicit Messaging Connection using Ethernet socket between a Mitsubishi iQR series PLC and an Omron NX-SL5700 safety CPU, through an NX-CSG320 communications gateway. In this configuration, the NX-SL5700 is performing the machine safety functions, incorporating devices such as door switches, safety area scanners, ESTOP buttons, force guided relays, remote safety IO blocks, robots with CIP Safety capabilities, and other safety components. The PLC is performing only non-safety functions such as the monitoring of the safety devices for annunciation on an HMI.

In order to establish the Explicit Messaging Connection, Tags in NX-SL5700 CPU need to be exposed to EtherNet/IP, then the iQR series PLC send EtherNet/IP Explicit Messages using the Ethernet Socket Interface to read and write the data of Tags that are exposed. This Explicit Messaging Connection will share: • 2 boolean data points from the iQR series PLC through the NX-CSG320 to the NX- SL5700 • 6 boolean data points from the NX-SL5700 through the NX-CSG320 to the iQR series PLC • IO Module status from local NX Safety IO from the NX-CSG320 to the iQR series PLC. Note: the names of the NX-SL5700 and NX-CSG320 as shown in Sysmac Studio have been changed from the default for clarity.

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Section 2: Mapping data from the NX-SL5700 to the NX-CSG320 Mapping data from the NX-SL5700 to the NX-CSG320 is used when internal values from the safety program need to be exposed on EtherNet/IP, such as the state of Function Block, as shown below. In this example ESTOP_1_Monitor only turns on when the ESTOP button is not pressed in, and the RESET_IN signal has been applied to reset the Emergency Stop function block.

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1. In Sysmac Studio, create the 8 Global Variables in the NX-SL5700 Safety CPU. 2 are ‘Input’ and 6 are ‘Output’ in the Expose Column. The 6 outputs are intended to show the monitoring of internal safety status in the safety CPU, and the 2 inputs are non-safe auxiliary inputs from the PLC, used for non-safety functions such as auxiliary lamps.

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Section 3: Mapping data from the NX-CSG320 to EtherNet/IP 1. At the top of the Multiview Explorer, select the Communications Gateway device, and then double click IO Map . 2. On the IO Map, enter variable names in the NX-CSG320 that match the names shown on the left in the NX-SL5700. It is not required that the names match, but for ease of programming, it is recommended that they do match. This step connects the Tags it the NX-SL5700 Safety CPU to Tags in the NX-CSG320 gateway.

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