GE P485 - Manual (Page 22)

3–4 P485 MODBUS TO PROFIBUS CONVERTER – USER GUIDE
DATA EXCHANGE
• Message frame: The message frame contains a description of what is actually
transmitted on the sub-network and consists of frame objects (see figure above).
• Frame object: Frame objects are used to compose a message frame. Frame objects
include fixed values, dynamic values retrieved from a specified memory location in the
P485, or strings.