h_wings
Member
Dear friend, recently I am doing a project using the communication between the Allen Bradley SLC500 series 05/3 cpu. I am using the rs232c communication port to communicate with proface gp 2501s series. But the proface touch screen always coming out the message plc is not responding. Is that any things cause this happen because rs232 support to be very easy communication. I am using the gp 2501s's 25 pins to communicate with the plc's cpu rs232c 9 pins. Pls help if any people know about the solutions tq.