Replacing Slaves During Communications; Introduction - Omron NX701-17 Series User Manual

9 Troubleshooting
9-4 Replacing Slaves during
Communications
9-4-1

Introduction

You can temporarily stop and start communications with a specified slave and all subsequent slaves
without stopping the entire communications system. This makes it possible to replace slaves during
communications for maintenance, or for replacement when a slave malfunctions.
Specified from the Sysmac Studio or
with an instruction for EtherCAT
communications.
NJ/NX-series CPU Unit
EtherCAT communications
instruction
EC_Disconnect
Slave
Precautions for Correct Use Precautions for Correct Use
• A Process Data Communications Error occurs if you physically disconnect a slave from the
network without executing the disconnection instruction.
• A Network Configuration Verification Error occurs if the correct node address is not set for a
slave that was replaced with the disconnection instruction and a connection is made to a dif-
ferent port than the one that was used for the disconnection instruction.
9-68
Sysmac Studio
Slave
Slave
Communications continue.
NJ/NX-series CPU Unit Built-in EtherCAT Port User's Manual (W505)
Slave you
Slave
need to replace
Replaced. Communications stop.
New slave