Author Topic: Communication ModbusTCP not running  (Read 694 times)

Henkie

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Communication ModbusTCP not running
« on: May 17, 2018, 08:34:59 AM »
Please could you help me. Trying to communicate with PLC (Wago 750-881) on Modbus TCP.
Create a ModbusTCP driver communication.
Select a digitalPanelMeter and inserted read adres 30256 onto PLCAdressValue (Should be equal with %QW256 of PLC) also onto PLCAddressKeypad. But no communication.
ModbusTCP communication tested with tester, address is availalible on bus but not on AdvancedHMI.

Archie

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Re: Communication ModbusTCP not running
« Reply #1 on: May 17, 2018, 08:47:40 AM »
256 is the Modbus offset. AdvancedHMI uses Modicon style addressing which starts with an offset of 1. Therefore try 40257

Henkie

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Re: Communication ModbusTCP not running
« Reply #2 on: May 17, 2018, 09:38:03 AM »
Address 30257 is working, Thanks