I try connect barcode scanner with plc s7-1200  & module cm1241 rs422/485 .But, i call PORT_CFG and appear error 80A0 .Please help me !!! 

Hello,

did you check and read what TIA help says about this status code? I believe you didn't. What specific future protocol type you expect use in your communication?

Hi,

I would enable the instruction with "always true". Req-Input can be rising edge. I am not sure but if Port_CFG runs over more than 1 CPU cycle it will not work.

Then analyze Output Error and save Status when "Error" = True. Perhaps so you will find some other Status Information.

Regards,

Towome

Thanks u,

I HAVE RESOLVED THIS ISSUE.BUT I STILL NOT CONNECTED WITH BARCODE. YOU CAN NOT GIVE ANY EXAMPLE.

REGARDS.

Hello,

very sry, for first I don't know to which user you're answering now, so don't know what was problem exactly. Therefore I still don't know what kind of example you need, very sry, poor informations from your side.

I have 4 barcode scanner rs232, plc s7-1200,module cm1241 rs485/422, convert rs232 to rs485 HEXIN.I want to read barcode scanner value tramsmit plc .You can help me?

Regards.

Hello,

maybe I'm curious how you can know from which scanner you have received data? I see some basic problem probably.

Hello,

see lot of missunderstandings again, very sry. Why you need use that Port_cfg? Look again to your instruction, why you set as enable bit of RCV bit name Send??? Look again to basic documentation of S7-1200 system manual or to mentioned example. Again, you know the system hoe you can differ what scanner send to you message at time? Do you know how that message from scanner looks? What kind of scanner you're using? I don't know how can I help you if you still not answer questions...