LSIS LSLV0055H100-4COFN - Page 376

RS-485 Communication Features
362
Read Normal Response
ACK
Station ID
CMD
Data
SUM
EOT
06h
‗01‘–‗FA‘
‗R‘
‗XXXX‘
‗XX‘
04h
1 byte
2 bytes
1 byte
n x 4 bytes
2 bytes
1 byte
Total bytes= (7 x n x 4): a maximum of 39
Read Error Response
NAK
Station ID
CMD
Error code
SUM
EOT
15h
‗01‘-‗FA‘
‗R‘
‗**‘
‗XX‘
04h
1 byte
2 bytes
1 byte
2 bytes
2 bytes
1 byte
Total bytes=9
7.3.6.2 Detailed Write Protocol
Write Request
ENQ
Station
ID
CMD
Address
Number of
Addresses
Data
SUM
EOT
05h
‗01‘–‗FA‘
‗W‘
‗XXXX‘
‗1‘–‗8‘ = n
‗XXXX…‘
‗XX‘
04h
1 byte
2 bytes
1 byte
4 bytes
1 byte
n x 4
bytes
2 bytes
1 byte
Total bytes= (12 + n x 4): a maximum of 44
Write Normal Response
ACK
Station ID
CMD
Data
SUM
EOT
06h
‗01‘–‗FA‘
‗W‘
‗XXXX…‘
‗XX‘
04h
1 byte
2 bytes
1 byte
n x 4 bytes
2 bytes
1 byte
Total bytes= (7 + n x 4): a maximum of 39