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Knowledge Base / Protocols / Modbus

How do you detect the individual Slave failure?

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To detect the slave failure, you may use the command error list. Each command returns an error code once it is executed. If a command returns a value different of 0, this means that there was a problem during the command execution. The command error list can be found in the read data zone at the address you specified in mcm.port1.cmderrptr.