750-881 PLC connection

Hardware and Linux
1

Hi,

I’m new to WAGO platform and struggling to connect with 750-881 PLC. I installed Wago IO demo version, Codesys 2.3.9.53 but cannot “login” to access PLC. It has properly assigned IP, im able to view Webprotal when accessing it. As well can connect by RS232 with Wago Ethernet settings. What i do - open Codesys 2.3, create new project and choose 750-881 demo as a target, setup comunication parameters with proper IP but after pressing Login i got after few seconds “communication error #0 logout performed” what do i do wrong? Defaut port which is used for connection is 1200, changed to 2455 but still no changes. Any hints welcome.

2

Do you have at least one IO module and an End Module (750-600) attached to the 750-881? If not, CODESYS cannot communicate with it because it’s not a valid node.

Or do you have a blinking red IO LED? If so, that may point to the issue too.

1 Like
3

Red led was giving error with 5 blinks if I remember correctly. This is interesting. I have end module only so need to check with any IO attached (I haven’t any at my hand now). As soon as possible I will check and write back.