LSIS LSLV-S100 - Communication Protocol; LS INV 485 Protocol

RS-485 Communication Features
280
Currently Registered CM Group Parameter
Address
Parameter
Assigned content by bit
0h0100-
0h0107
Status Parameter-1-
Status Parameter-8
Parameter communication code value registered at
CM.31-38 (Read-only)
0h0110-
0h0117
Control Parameter-1-
Control Parameter-8
Parameter communication code value registered at
CM.51-58 (Read/Write access)
Note
When registering control parameters, register the operation speed (0h0005, 0h0380, 0h0381)
and operation command (0h0006, 0h0382) parameters at the end of a parameter control frame.
For example, when the parameter control frame has 5 parameter control items (Para Control -
x), register the operation speed at Para Control-4 and the operation command to Para Control-5.
7.3 Communication Protocol
The built-in RS-485 communication supports LS INV 485 and Modbus-RTU protocols.
LS INV 485 Protocol
The slave device (inverter) responds to read and write requests from the master device
(PLC or PC).
Request
ENQ
Station ID
CMD
Data
SUM
EOT
1 byte
2 bytes
1 byte
n bytes
2 bytes
1 byte
Normal Response
ACK
Station ID
CMD
Data
SUM
EOT
1 byte
2 bytes
1 byte
n x 4 bytes
2 bytes
1 byte
Error Response
NAK
Station ID
CMD
Error code
SUM
EOT
1 byte
2 bytes
1 byte
2 bytes
2 bytes
1 byte
• A request starts with ENQ and ends with EOT.
• A normal response starts with ACK and ends with EOT.