Process image

The KM2774 terminal module presents itself in the process image with 2 or 3 bytes of input data and 2 or 3 bytes of output data. These are organized as follows:

*) Word alignment: The Bus Coupler places values on even byte addresses

Key

SB: Status byte (not applicable for compact evaluation)
CB: Control byte (not applicable for compact evaluation)

DataIN: Process input data
DataOUT: Process output data

• Please refer to the Mapping page for the assignment of the bytes and words to the addresses of the controller.
• The meaning of the control and status bytes is explained on the Control and Status bytes page.
• For a description of the process data words please refer to the pages on Process input data (DataIN) and Process output data (DataOUT).