Mitsubishi Electric GOT2000 Series Connection Manual page 179


RS-422 cable
(1) Connection diagram
(a) RS-422 connection diagram 1)
GOT side
RDA
2
RDB
7
SDA
1
SDB
6
RSA
3
RSB
8
CSA
4
CSB
9
SG
5
FG
-
(b) RS-422 connection diagram 2)
GOT side
RDA
2
RDB
7
SDA
1
SDB
6
RSA
3
RSB
8
CSA
4
CSB
9
SG
5
FG
-
YOKOGAWA PLC side
SDB
SDA
RDB
RDA
-
-
-
-
SG
SHIELD
YOKOGAWA PLC side
SDB
R
SDA
RDB
R
RDA
-
-
-
-
SG
FG
(2) Precautions when preparing a cable
(a) Cable length
The length of the RS-422 cable must be 1200m or
less.
(b) GOT side connector
For the GOT side connector, refer to the following.
1.4.1 GOT connector specifications
(c) YOKOGAWA PLC side connector
Use the connector compatible with the
YOKOGAWA PLC side module.
For details, refer to the YOKOGAWA PLC user's
manual.
(3) Connecting terminating resistors
(a) GOT side
Set the terminating resistor setting switch of the
GOT main unit to "Disable".
For the procedure to set the terminating resistor,
refer to the following.
1.4.3 Terminating resistors of GOT
(b) YOKOGAWA PLC side
When connecting a PLC link module to a GOT, a
terminating resistor must be connected to the PC
link module.
The following describes how to connect it on the
PC link module.
• F3LC11-2N
Set the terminator switch (TERMINATOR) on the
front panel of F3LC11-2N to the "4-WIRE" side to
enable the terminator.
• LC02-0N
Connect the terminating resistor provided with the
LC02-0N across SDA and SDB, and across RDA
and RDB on the terminal block.
7. CONNECTION TO YOKOGAWA PLC
7.2 Serial Connection
7
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