Write Single Coil Command

I currently have eight commands - four read single coils & four read single input registers. All the LED’s are as they should be.

I have a problem with adding the WRITE single coil (to modbus addr “1”) command. LED 5 blinks red.

Could it be the data location of the output data? Currently it’s 0x000C
AB7007-C

Hello,

If you open the Subnetwork Manger, is there any conflicts for the allocation of the INPUT/OUTPUT area?

If you run the logs of the Anybus unit, do get an exception code in the response for the transaction?

-Kevin