8212 with 750-652 modbus trouble

Hello

I’m running a 8212 with a 750-652 module trying to talk to some modbus slaves. The communication HAS worked, but now it does’nt. I get the following errors from the FbMbMasterSerial function block:

153 ‘Error time out’
154 ‘Error while transmission → transportlayer can not transmit’

I have terminating resistor in both ends of the line.

When the communication was working, some LEDs where flashing on the module. Now LEDs A and E has steady light.

Any ideas on what could be wrong?

Hi,

If you have e!COCKPIT version v1.10.0.1 or newer, could you please downgrade the version of the following libraries (Library Manager > Placeholders) and try again :

  1. WagoSysModule_75x_65x → v1.9.5.2 (instead of 1.9.5.5)
  2. WagoTypesCom → v1.6.1.3 (instead of v1.6.2.0)

Let us know if it’s solve your problem.

Seems like this solved the problem. I have had it running now for two weeks without problem

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