11.5 Communication protocol (MODBUS-RTU)
Use Modbus-RTU protocol (Open protocol).
Computer or other hosts can be Master and inverters Slave. Inverter responds to Read/Write
command from Master.
1.Write Disable (Address 0x0004 value is 0).
2.Read Only or Not Program during Running.
11.6 Communication protocol (LS BUS)
Basic format
Command message (Request):
Command message
(Request):
Normal response
(Acknowledge Response)
Negative response
(Negative Acknowledge
Response)
Description:
Request starts with “ENQ” and ends with “EOT”.
Acknowledge Response starts with “ACK” and ends with “EOT”.
Negative Acknowledge Response starts with ”NAK” and ends with “EOT”.
“Drive Number” is the number of drives and indicated in 2 bite ASCII-HEX.
(ASCII-HEX: Hexadecimal consists of „0‟ ~ „9‟, „A‟ ~ „F)
CMD: Capital letter
Data: ASCII-HEX
Ex) when data value is 3000: 3000 (dec) → „0‟ ‟B‟ ‟B‟ ‟8‟h → 30h 42h 42h 38h
For Service Call 800-848-2504
For Service Call 800-848-2504
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