PLC Connect- Modbus/TCP - Coils Addressing Requirements
I was reading your comments on the question (https://forum-controlsystems.abb.com/3410141/PLC-Connect-Controller-Addressing-
for-Communicating-Modbus-Registers) then, I've got a doubt.
You state that "PLC Connect will always read a minimum of 16 consecutive coils or discrete inputs and it will always start on an address that is a multiple of 8." then, I understand that PLCC imposes rules on the Modbus-Slave communication map. Is there any documentation listing those rules?
I am trying to understand if Modbus-Slave is allowed to have gaps like in the example in the picture below. It has starting addresses multiple of 8, followed by 16 positions in each column and the coils to be read are marked with an X at the right, with few gaps between them.
Thank you in advance!