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2. INSTALLATION AND WIRING
2.7 Communication connectors and terminals
2.7.2
RS-485 terminal block
Communication operation
The RS-485 terminals enable communication operation from a personal computer, etc. When the PU connector is used for
connection between the converter unit and a personal, FA, or other computer with a communication cable, a user program can
run to monitor the converter unit or read and write parameters.
Communication can be performed with the Mitsubishi inverter protocol (computer link operation) and MODBUS RTU protocol.
For the details, refer to
.
NOTE
• To avoid malfunction, keep the RS-485 terminal wires away from the control circuit board.
Conforming
standard
EIA-485 (RS-485)
Transmission
format
Multidrop link
Communication
speed
Maximum 115200 bps
Overall length
500 m
Connection cable
Twisted pair cable (4 pairs)
+
-
+ TXD
RXD
-
VCC
GND
+
-
+ TXD
RXD
-
VCC
GND
OPEN
100Ω
RDA1
(RXD1+)
RDB1
(RXD1-)
RDA2
(RXD2+)
RDB2
(RXD2-)
SDA1
(TXD1+)
SDB1
(TXD1-)
SDA2
(TXD2+)
SDB2
(TXD2-)
P5S
(VCC)
SG
(GND)
P5S
(VCC)
SG
(GND)
Terminating resistor switch
Initially-set to "OPEN".
Set only the terminating resistor switch of
the remotest converter unit to the "100 Ω" position.
Содержание FR-CC2-N Series
Страница 61: ...60 3 PRECAUTIONS FOR USE OF THE CONVERTER UNIT 3 4 Checklist before starting operation MEMO ...
Страница 137: ...136 5 PARAMETERS 5 10 Checking parameters changed from their initial values initial value change list MEMO ...
Страница 153: ...152 6 PROTECTIVE FUNCTIONS 6 6 Check first when you have a trouble MEMO ...
Страница 165: ...164 7 PRECAUTIONS FOR MAINTENANCE AND INSPECTION 7 2 Measurement of main circuit voltages currents and powers MEMO ...
Страница 171: ...170 8 SPECIFICATIONS 8 3 Outline dimension drawings MEMO ...