Mitsubishi FX3U-232-BD - 5.7 F700 and A700 Series (when built-in RS-485 terminal is connected); 5.7.1 Contents of parameter setting

E-43
FX Series PLC User's Manual - Data Communication Edition
Inverter Communication
5 Communication Setting in Inverter
5.7 F700 and A700 Series (when built-in RS-485 terminal is connected)
A
Common Items
B
N:N Network
C
Parallel Link
D
Computer Link
E
Inverter Communication
F
Non-Protocol Communication (RS/RS2 Instruction)
G
Non-Protocol Communication (FX
2N
-232IF)
H
Programming Communication
I
Remote Maintenance
Apx.
Discontinued models
5.7 F700 and A700 Series (when built-in RS-485 terminal is connected)
5.7.1 Contents of parameter setting
1. Contents of communication setting (essential items)
The table below shows parameters which should be set in all cases.
*1. The RS-485 communication speed set value "38400 bps" is not supported by FX PLCs.
2. Parameters which should be adjusted between test operation and actual operation
3. Others (which should be set if necessary)
The table below shows parameters to be considered when using various system configuration and inverters.
For the method of use, refer to the respective inverter manual.
Parameter No. Parameter item Set value Setting contents
Pr331 RS-485 communication station 00 to 31 Up to eight inverters can be connected.
Pr332
RS-485 communication speed
*1
48 4800 bps
96 9600 bps (standard)
192 19200 bps
Pr333 RS-485 communication stop bit length 10 Data length: 7-bit/Stop bit: 1-bit
Pr334
RS-485 communication parity check
selection
2 2: Even parity
Pr337 RS-485 communication waiting time setting 9999 Set in communication data
Pr341 RS-485 communication CR/LF selection 1 CR: Provided, LF: Not provided
Pr79 Operation mode selection 0
External operation mode is selected when
power is turned ON.
Pr340 Communication startup mode selection 1 Computer link
Pr336 RS-485 communication check time interval 9999 Communication check is stopped.
Pr549 Protocol selection 0 Mitsubishi inverter (computer link) protocol
Parameter No. Parameter item Set value Setting contents
Pr335
RS-485 communication number
of retries
9999
Set the value shown on the left during adjustment, and
set a value from 1 to 10 during operation.
Parameter No. Parameter item Set value Setting contents
Pr342 Communication EEPROM write selection 0 or 1
0: EEPROM is written.
1: RAM is written.
Pr338 Communication operation command source 0 or 1
0: PLC
1: Outside
Pr339 Communication operation command source 0 or 1
0: PLC
1: Outside