Help on Wago 750-842 Modbus communication

[Siby]

I have 2 Wago Processors(750-842) and i am trying to Communicate between them through the Ethernet. I am using the function block Ethernet modbus master UDP block for this which comes along in the I/O Pro 32 Library.I have tried many ways but i still cant get my datas transferred.I have configured the block as given in the manual and tried a couple of other ways too,but to of no use.Any help on this topic would be highly appreciated

 

[danw]

Have you downloaded the Modbus applications notes, for instance,

Description of the function module "MODBUSMASTER_RTU" and "MODBUSSLAVE_RTU" out of the library "modb_I04

or the other 5 or 6 relating to Modbus communications?

http://www.wago.us/83.htm?L1=/services/212.htm&HL1=1&L2=/services/213.htm&HL2=220&L3=/services/371.htm&HL3=380&B=/services/380.htm

Is one device configured for master, the other for slave?

Dan

 

[Siby]

Dear Siby,

please refer to our application notes under www.wago.com/technical documentation:

http://www.wago.com/wagoweb/documentation/app_note/a3000/a300000e_f.htm

This application note explains the intercom and includes ready made sample for ease of setup.

Mit freundlichen Gruessen,
with best regards,

WAGO Kontakttechnik GmbH & Co. KG

i got this reply from them and i've been meddling around on this example for 2 days

 

[Siby]

Mr Dan..

I added all the necessary libraries but of no use and i just need to try the intercom stuff they have told.

 

[gregoryg]

I think, that there is something what you need
http://www.wago.com/wagoweb/documentation/app_note/a1122/a112200e_f.htm