TimWilborne
Lifetime Supporting Member
I'm doing my first Weintek project using a Micrologix 1400 PLC and need some help with my communications configuration. I am using the "Rockwell EtherNet/IP (DF1)" driver and I believe I have the IP configuration correct because I can read data from the PLC, I just can't write data to the PLC.
So for example I have a numeric object to N7:0. In the PLC it shows 123. I can see 123 on the screen. But if I try to set it to 0 or any other value, it stays at 123. For a split second you can sometimes see it change then it goes right back to 123 as if it is only writing locally then it reads the PLC address again and overwrites it. The PLC program is not writing to N7:0 anywhere in the program.
Any thoughts?
So for example I have a numeric object to N7:0. In the PLC it shows 123. I can see 123 on the screen. But if I try to set it to 0 or any other value, it stays at 123. For a split second you can sometimes see it change then it goes right back to 123 as if it is only writing locally then it reads the PLC address again and overwrites it. The PLC program is not writing to N7:0 anywhere in the program.
Any thoughts?