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Hi Folks,
I have previously worked with TCP/IP Modbus on numerous occasions and I have always used a Unit ID (Slave address). If the network has simply a single device behind a gateway or locally there is only a single Slave, is there a requirement to have the Unit ID setup? I'm sure I read data on a PLC before without the unit ID setup correctly? Since TCP/IP opens up the connection initially this would be plausible?
Perhaps this may change depending on the hardware / software used.
Any input greatly appreciated.
I have previously worked with TCP/IP Modbus on numerous occasions and I have always used a Unit ID (Slave address). If the network has simply a single device behind a gateway or locally there is only a single Slave, is there a requirement to have the Unit ID setup? I'm sure I read data on a PLC before without the unit ID setup correctly? Since TCP/IP opens up the connection initially this would be plausible?
Perhaps this may change depending on the hardware / software used.
Any input greatly appreciated.