ABB CI853 Modbus issue


urgent issue with ABB CI853 Modbus RTU. I need to configure the card as Slave. I use MBConnect in Diagram and put 1 for En_C and '2.1' for Channel and '1' for Partner. but there is still -5303 error code.
Hi, I saw it before but the problem is that my card need to be configured as Slave. and I am writing in Diagram. I did the same and still I have problem. I choose MBWrite and MBread Also for communication, biggest problem is start address, I want to use 40001 address for first Start address. but I can not understand the concept. for example regarding MBWrite: '%QW10#0000' or '%QD16#00' or... I need to send and receive Analog data.