PARAMETERS
114
4.2.29 Computer link operation (Pr. 117 to Pr. 124)
Pr. 117 "station number"
Pr. 118 "communication speed"
Pr. 119 "stop bit length"
Pr. 120 "parity check presence/absence"
Pr. 121 "number of communication retries"
Pr. 122 "communication check time interval"
Pr. 123 "waiting time setting"
Pr. 124 "CR
⋅
⋅⋅
⋅
LF presence/absence selection"
Used to perform required settings for RS-485 communication between the inverter and
personal computer.
!
The motor can be run from the PU connector of the inverter using RS-485
communication.
Communication specifications
Conforming standard RS-485
Number of inverters connected 1:N (maximum 32 inverters)
Communication speed Selectable between 19200, 9600 and 4800bps
Control protocol Asynchronous
Communication method Half-duplex
Character system ASCII (7 bits/8 bits) selectable
Stop bit length Selectable between 1 bit and 2 bits.
Terminator CR/LF (presence/absence selectable)
Parity check Selectable between presence (even/odd) and absence
Check
system
Sumcheck Present
Communication
specifications
Waiting time setting Selectable between presence and absence
!
For the data codes of the parameters, refer to Appendix 1 “Data Code List (page
171).
Parameter
Number
Factory
Setting
Setting Range
117 0 0 to 31
118 192 48, 96, 192
Data length 8 0, 1
119 1
Data length 7 10, 11
120 2 0, 1, 2
121 1 0 to 10, 9999
122* 0 0 to 999.8 s, 9999
123 9999 0 to 150ms, 9999
124 1 0, 1, 2
* When making communication, set any value other than 0 in Pr. 122 "communication check
time interval".
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