Hi all, i am trying to establish the communication between Honeywell epks scada system and Siemens s7 400 using modbus tcp ip. The digital is working fine, but analog was having errors. Honeywell system report receive of one byte extra than expected and due to error accumulation will fail after some time. During testing I change Honeywell controller to read from sec Siemens controller only and tht make the comm healthy. Do u face that before? And what can be the reason for primary controller fail?