LSIS LSLV0055H100-4COFN - Page 377

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RS-485 Communication Features
Write Error Response
NAK
Station ID
CMD
Error Code
SUM
EOT
15h
‗01‘–‗FA‘
‗W‘
‗**‘
‗XX‘
04h
1 byte
2 bytes
1 byte
2 bytes
2 bytes
1 byte
Total bytes=9
7.3.6.3 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
Number of
Addresses
Address
SUM
EOT
05h
‗01‘–‗FA‘
‗X‘
‗1‘–‗8‘=n
‗XXXX…‘
‗XX‘
04h
1 byte
2 bytes
1 byte
1 byte
n x 4 bytes
2 bytes
1 byte
Total bytes= (8 + n x 4): a maximum of 40
Monitor Registration Normal Response
ACK
Station ID
CMD
SUM
EOT
06h
‗01‘–‗FA‘
‗X‘
‗XX‘
04h
1 byte
2 bytes
1 byte
2 bytes
1 byte
Total bytes=7
Monitor Registration Error Response
NAK
Station ID
CMD
Error Code
SUM
EOT
15h
‗01‘–‗FA‘
‗X‘
‗**‘
‗XX‘
04h
1 byte
2 bytes
1 byte
2 bytes
2 bytes
1 byte
Total bytes=9
Monitor Registration Perform Request: A data read request for a registered address,