RS-485 Communication Features
5.3.1.3 Monitor Registration Detailed Protocol
Monitor registration request is made to designate the type of data that requires continuous
monitoring and periodic updating.
Monitor Registration Request: Registration requests for n addresses (where n refers to the
number of addresses. The addresses do not have to be contiguous.)
ENQ Station ID CMD
Address SUM EOT
Total bytes= (8 + n x 4): a maximum of 40
Monitor Registration Normal Response
Total bytes=7
Monitor Registration Error Response
Total bytes=9
Monitor Registration Perform Request: A data read request for a registered address, received
from a monitor registration request
Total bytes=7
Monitor Registration Execution Normal Response
Total bytes= (7 + n x 4): a maximum of 39