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Modbus TCP

Forum: Engineering 🇬🇧

Creator: andras-mozes

Created: 2021-02-04

Updated: 2021-02-05

andras-mozes - 2021-02-04

Hello,

I would like to ask for some help.
I would like to know the ModbusTCPSlave status, which is Running on the enclosed screen shot.

The problem that it can happen that the Modbus_TCP_Slave got disconnected, but visible only by this ModbusTCPSlave status (which then is Not Running), and off course I have a triangle besides the Modbus_TCP_Slave.

I really appreciate your support in advance.

Best Regards!

ModbusTCPSlave status.png

Modbus_TCP_Slave.png

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andras-mozes - 2021-02-04

Additional question - Is the right behavior when byModbusError jumps between UNDEFINED and RESPONSE_SUCCESS?
While the ModbusTCPSlave status can change from Running to Not Running.

Does it imply some kind of problem or it is something that I should expect.

Thanks for your help in advance.

ModbusTCP.mp4

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dFx - 2021-02-05

What about https://help.codesys.com/webapp/yePjxWIB36goBg4qOqNVpO-2vmA%2FGetDeviceState;product=IoDrvModbus;version=3.5.16.0

About the behavior, it may be something related with your request rate, but I can't help much.

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