Parameter Description
Parameter Description
63
Parameter
Factory
Setting
Setting Range
Remarks
Parameter
51
1
1~2
1
Only CR
2
CR and LF
52
1
0~10
(Note 2)
53
9999
0~999.8s, 9999
0~999.8s
Conduct communication overtime test
according to the set value
9999
9999: No communication overtime test
(Note 3)
153
0
0, 1
0
Warn and call to stop
1
No warning and keep running
154
4
0~5
0
Modbus ASCII mode, Protocol<1,7,N,2>
(Note 4)
1
Modbus ASCII mode, Protocol<1,7,E,1>
2
Modbus ASCII mode, Protocol<1,7,O,1>
3
Modbus RTU mode, Protocol<1,8,N,2>
4
Modbus RTU mode, Protocol<1,8,E,1>
5
Modbus RTU mode, Protocol<1,8,O,1>
● Reset the inverter after revising communication parameters.
● The SS2-type inverters have two optional communication protocols: Shihlin protocol and Modbus
protocol. Corresponding P.32, P.36, P.52, P.53, and P.153 are applied to both protocols. P.48~P.51 is
only applied to the Shihlin protocol while P.154 is only applied to Modbus protocol.
●When changing the parameter values frequently, set "1" in P. 342 to write them to the RAM. The
life of the EEPROM will be shorter if parameter write is performed frequently with the setting
unchanged from "0 (initial value)" (EEPROM write).
●When Pr. 342 is set to "1" (only RAM write), the new values of the parameters will be cleared at
power supply-off of the inverter. Therefore, the parameter values available when power is switched
ON again are the values stored in EEPROM previously.
Note: 1.The wiring method and matching resistance determines the number of inverters controlled by the
communication interface of the host computer. Once Modbus protocol is selected, please set P.33 to none
zero values.
2. If the time of communication errors exceeds the set value of P.52 while P.153 is set to 0, alarm will be
activated and the screen of DU06 will display
.
3. When P.53=9999, there is no time limit.
4. For Modbus protocol, protocol 1 is the start bit; 7 is the data bits; No is the parity bit; 2 is the stop bit; N
means no parity; E means 1-bit even parity; and O means 1-bit odd parity.
1. Shihlin protocol
● Automatic ASCII code (hexadecimal) conversion for communication between PC and the inverter.
● Follow the steps below for data communication between the inverter and the computer.
