This document details the Modbus function codes executed by the MOTCP driver for requests generated by both Main and Standard driver sheets, according to the data types in the individual requests and the type of triggering used. It also breaks down the actual data sent and received, visible as hex characters in the Output Window, to identify the components in terms of Transaction Identifier, Protocol Identifier, Msg Length, Station, Function Code, Starting Address, Total Addresses, and Value(s).