Posted 20 Nov 2018 (edited) Dears I have OMRON SRM1 CO2-V2 PLC, whenever I try to conect it with CX- programmer via RS 232C, I got (Failed to connect to PLC) message When I changed the PLC, I can get just two option to network types (toolbus, and sysmac Way). My RS 232 card work well, i tested it via (Putty). what I miss here to configure ? 2- The cpu is in RUN mode, is this effect on the communication toll or not Edited 20 Nov 2018 by YMA Share this post Link to post Share on other sites
Posted 21 Nov 2018 Toolbus is the programming port. That's how I program these devices, not via the RS232. Share this post Link to post Share on other sites
Posted 21 Nov 2018 1 hour ago, Crossbow said: Toolbus is the programming port. That's how I program these devices, not via the RS232. I need to Upload the PLC lader Diagram, what should I do Share this post Link to post Share on other sites
Posted 21 Nov 2018 (edited) Omron RS-232 port pin arrangement is different from the usual computer RS-232 port. Make sure you wired it right like shown below (right is Omron side connector, left is computer side connector) : Edited 21 Nov 2018 by innoaloe Share this post Link to post Share on other sites
Posted 21 Nov 2018 1 hour ago, innoaloe said: Omron RS-232 port pin arrangement is different from the usual computer RS-232 port. Make sure you wired it right like shown below (right is Omron side connector, left is computer side connector) : Thank you for replay, let me re write what I understand from your post 1- The wiring must be changed to your diagram to be able upload the ladder diagram from my SRM 1 PLC Now, what about the network type, which one I must use (SYSMAC WAY OR TOOLBUS) Share this post Link to post Share on other sites
Posted 22 Nov 2018 Yes. And I believe both will work. 1 person likes this Share this post Link to post Share on other sites