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104
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Operation Instruction of S900 E Series Inverter
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105
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group is convenient for users to monitor.
Parameter: P614 = 200; P615 = 4; P616 = 1.
7-8 Initial settings and specifications of RS-485
communication
Used to perform required setting for communication between the
inverter and personal computer.
P700
RS-485 Communication speed Initial value: 0
Setting range
0 – 3
Unit
1
Content:
0: 4800bps 1: 9600bps
2: 19200bps 3: 38400bps
For example, the communication speed is 19200bps when the
setting value is “2”.
P701
Communication mode Initial value: 0
Setting range
0 – 5
Unit
1
Content:
0: 8N1 For ASCII 1: 8O1 For ASCII
2: 8E1 For ASCII 3: 8N1 For RTU
4: 8O1 For RTU 5: 8E1 For RTU
P701 sets the format of communication data. Please see related
communication specification in detail.
P702
RS-485 communication station Initial value: 0
Setting range
0 – 240
Unit
1
Each inverter must have a station number, which will be defined
through P702. Communication control of inverter can connect with
240 others.
If P702 is set to “ 0 “ , means communication function is invalid.
S900 E series MODBUS communication protocol
S900 E series communication agreement is with MODBUS ASCII
(American standard code for information inter change) mode: Each
byte consists of 2 ASCII characters, for example: The expression