Mitsubishi Electric FR-F740 EC Instruction Manual page 164

Parameter overview
Parameter
Func-
Name
tion
PU communication
124 CR/LF presence/
absence selection
RS485 communication
331
station
RS485 communication
332
speed
RS485 communica-
333
tion stop bit length
RS485 communica-
tion parity check selec-
334
tion
RS485 communication
335
retry count
RS485 communication
336
check time interval
RS485 communication
337
waiting time setting
RS485 communica-
341
tion CR/LF selection
Communication
E²PROM write
342
selection
Communication error
343
count
Protocol selection
549
Tab. 6-1: Parameter overview (14)
6 - 14
Incre- Initial Setting
ments Value Range
0
1 1 1
2
0–31
1 0
0–247
0–127
3/6/12/24/
1 96
48/96/192/
384
96/192/384/
768
1 1 0/1/10/11
1 2 0/1/2
1 1 0–10/9999
0
0.1s 0s
01–9998s
9999
0–150ms/
1ms 9999
9999
1 1 0/1/2
0
1 0
1
1 0 Read only
0
1 0
1
2
Description
Without CR/LF
With CR
With CR/LF
Set the inverter station number
(same specifications as Pr.117 )
When "0" is set in Pr. 549
(Mitsubishi protocol)
When "1" is set in Pr. 549
(Modbus-RTU protocol)
When "2" is set in Pr. 549
(BACnet protocol)
Used to select the communication
speed (same specifications as
Pr. 118)
When "0" is set in Pr. 549
(Mitsubishi protocol)
When "1" is set in Pr. 549
(Modbus-RTU protocol)
When "2" is set in Pr. 549
(BACnet protocol)
Select stop bit length and data length
(same specifications as Pr. 119).
Select the parity check specifications
(same specifications as Pr. 120).
Set the permissible number of retries
at occurrence of a data receive error
(same specifications as Pr. 121).
RS485 communication can be made,
but the inverter will come to an alarm
stop in the NET operation mode.
Set the communication check time
interval (same specifications as
Pr. 122).
No communication check
Set the waiting time between data
transmission to the inverter and
response (same specifications as
Pr. 123).
Select presence/absence of CR/LF
(same specifications as Pr. 124).
Parameter values written by
communication are written to the
E²PROM and RAM.
Parameter values written by
communication are written to the
RAM.
Display the number of communi-
cation errors during Modbus-RTU
communication. Read only.
Displayed only when Modbus-RTU
protocol is selected.
Mitsubishi
After setting
inverter (com-
change, reset
puter link)
(switch power off,
protocol
then on) the
Modbus-RTU inverter. The set-
protocol ting change is
reflected after a
BACnet MS/
reset.
TP protocol
Parameter
All
Para- Para-
para-
meter meter
meter
copy clear
Refer
clear
to
page
✔: enabled
—: disabled
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6-261
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