27
Control circuit specifications
2
2.3.6
RS-485 terminal block
2.3.7
Communication operation
⋅
Conforming standard: EIA-485(RS-485)
⋅
Transmission format: Multidrop link
⋅
Communication speed: MAX 38400bps
⋅
Overall length: 500m
⋅
Connection cable:Twisted pair cable
(4 paires)
Using the PU connector or RS-485 terminal, you can
perform communication operation from a personal
computer etc. When the PU connector is connected
with a personal, FA or other computer by a
communication cable, a user program can run and
monitor the inverter or read and write to parameters.
For the Mitsubishi inverter protocol (computer link
operation), communication can be performed with the
PU connector and RS-485 terminal.
For the Modbus RTU protocol, communication can
be performed with the RS-485 terminal.
For further details, refer to
chapter 4 of
the
instruction manual (applied)
.
RXD
RDA1
(RXD1+)
RDB1
(RXD1-)
RDA2
(RXD2+)
RDB2
(RXD2-)
SDA1
(TXD1+)
SDB1
(TXD1-)
SDA2
(TXD2+)
SDB2
(TXD2-)
P5S
(VCC)
SG
(GND)
P5S
(VCC)
SG
(GND)
VCC
TXD
OPEN
100
Ω
Terminating resistor switch
Factory-set to "OPEN".
Set only the terminating resistor switch of the
remotest inverter to the "100
Ω
" position.
Programmable controller
Multidrop link
(32 inverters maximum
are connectable)
Inverter
Inverter
Inverter
Summary of Contents for FR-A741-11K
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