LS ELECTRIC LSLV-H100 Series, User Manual

Page: 365 / 618

RS-485 Communication Features
352
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.)
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
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
ACK Station ID CMD SUM EOT
06h
‘01’–‘FA’ ‘X’ ‘XX’
04h
1 byte 2 bytes 1 byte 2 bytes 1 byte
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
ENQ Station ID CMD SUM EOT
05h
‘01’–‘FA’ ‘Y’ ‘XX’
04h
1 byte 2 bytes 1 byte 2 bytes 1 byte