Instruction manual

122
PARAMETERS
4.2.36 Computer link operation (Pr. 117 to Pr. 124, Pr. 342)
Pr. 117 "communication 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"
Pr. 342 "E PROM write 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
 For the instruction codes of the parameters, refer to Appendix 1 "Instruction
Code List" (page 196).
Conforming standard EIA-485(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
Communication
specifications
Character system ASCII (7 bits/8 bits) selectable
Stop bit length Selectable between 1 bit and 2 bits.
Terminator CR/LF (presence/absence selectable)
Check
system
Parity check Selectable between presence (even/odd) and absence
Sum check Present
Waiting time setting Selectable between presence and absence
REMARKS
For computer link operation, set 65520 (HFFF0) as the value "8888" and 65535
(HFFFF) as the value "9999".
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