AC500, Modbus TCP/IP Server Configuration using Automation builder ver 2.2
I am trying to use a PM573-ETH as remote controller with fixed IP address. I configured it as Modbus TCP/IP Server as per attached configuration (PNG files). I am using a Modbus tester (QModMaster). The connection settled successfully with the PLC but I can not get any reading.
I noticed that I can get the readings if I perform this action (read hold register) immediately after the connection action. If I keep get the readings manually (mouse clicks) the readings kept updated correctly without any errors. Then if I stop the reading action for a couple of seconds I loose the connection and I have to disconnect and connect again manually.
Is this a normal attitude in this PLC or I have to perform some corrective actions.
Please advise
I noticed that I can get the readings if I perform this action (read hold register) immediately after the connection action. If I keep get the readings manually (mouse clicks) the readings kept updated correctly without any errors. Then if I stop the reading action for a couple of seconds I loose the connection and I have to disconnect and connect again manually.
Is this a normal attitude in this PLC or I have to perform some corrective actions.
Please advise
Asked 8 months ago
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