Mitsubishi Electric fr-e700 series, Инструкция по эксплуатации

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Parameter Communication operation and setting
FR-E700 SC EC/ENE 6 - 265
6.19.5 Modbus®-RTU communication
(Pr. 117, Pr. 118, Pr. 120, Pr. 122, Pr. 343, Pr. 549)
Using the Modbus® RTU communication protocol, communication operation or parameter setting
can be performed from the PU connector of the inverter.
The above parameter can be set when Pr. 160 "User group read selection" = 0.
햲
When Modbus®-RTU communication is performed from the master with address 0 (station num-
ber 0) set, broadcast communication is selected and the inverter does not send a response mes-
sage. When response from the inverter is necessary, set a value other than "0" (initial value is 0)
in Pr. 117 "PU communication station number". Some functions are invalid for broadcast com-
munication. (Refer to page 6-268.)
Pr. No. Name
Initial
Value
Setting
Range
Description Parameters referred to
Refer to
Section
117
PU communication
station number
0
0
No reply to the master
햲
—
1–247
Inverter station number specification
Set the inverter station numbers when two or more inverters are connected
to one personal computer.
118
PU communication
speed
96
48/96/
192/384
Communication speed
The setting value × 100 equals the communication speed.
(Example: 9600bps if 96)
120
PU communication
parity check
2
0
Without parity check
Stop bit length 2bit
1
With odd parity check
Stop bit length 1bit
2
With even parity check
Stop bit length 1bit
122
PU communication
check time interval
0
0
RS-485 communication can be made. Note that a communication fault
(E.PUE) occurs as soon as the inverter is switched to the operation mode
with command source.
0.1
–
999.8 s
Communication check (signal loss detection) time interval
If a no-communication state persists for longer than the permissible time,
the inverter will come to trip (depends on Pr. 502).
9999 No communication check (signal loss detection)
343
Communication error
count
0 —
Displays the number of communication errors during Modbus®-RTU
communication (reading only)
502
Stop mode selection at
communication error
0
At Fault
Occurrence
Indication Fault Output
At Fault
Removal
0/3 Coasts to stop E.PUE Output
Stop
(E.PUE)
1
Decelerates to
stop
After stop E.PUE
Output after
stop Stop
(E.PUE)
2
Decelerates to
stop
After stop E.PUE Without output
Automatic
restart
functions
549
Protocol selection 0
0 Mitsubishi inverter (computer link) protocol
1 Modbus®-RTU protocol
NOTES When "1" (Modbus®-RTU protocol) is set in Pr. 549 and "384" (38400 bps) in Pr. 118, parameter unit
(FR-PU04/FR-PU07) is disabled. When using the parameter unit (FR-PU04/FR-PU07), change parame-
ter using the operation panel.
When using the Modbus®-RTU protocol, set Pr. 549 "Protocol selection" to "1".
When PU connector is selected as NET mode operation source (when Pr. 550 "NET mode operation
command source selection" = 2 or 9999 (initial value) without communication option), Modbus®
RTU communication operation can be performed. (Refer to section 6.19.2).