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PARAMETERS
99
"
Computer link operation (Pr. 117 to Pr. 124)
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.
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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
Sum check Present
Communication
specifications
Waiting time setting Selectable between presence and absence
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For the data codes of the parameters, refer to Appendix 4 "Data Code List"
(page 185).
REMARKS
For computer link operation, set 65520
(
HFFF0
)
as the value "8888" and 65535
(HFFFF) as the value "9999".
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, 0.1 to 999.8 s, 9999
123 9999 0 to 150, 9999
124 1 0, 1, 2
* When making communication, set any value other than 0 in Pr. 122
"communication check time interval".