Mitsubishi Electric GOT2000 Series Connection Manual page 778

(13) RS-485 connection diagram 13)
*1
*2
(14) RS-485 connection diagram 14)
GOT side
(connector terminal block)
SG
SDB
SDA
RDB
RDA
* 3
RSA
* 3
RSB
* 3
CSA
* 3
CSB
*1
*2
*3
14 - 22
14.2 System Configuration
* 1
GOT side
(connector terminal block)
SDA
SDB
RDA
RDB
SG
* 2
RSA
* 2
RSB
* 2
CSA
* 2
CSB
Set the terminating resistor of the GOT side to "330 ".
➠
1.4.3 Terminating resistors of GOT
The signals RSA, RSB, CSA, and CSB are not provided for
Built-in RS485 terminal block
Station No.0,
or A8ERS
SDA2
SDB2
RDA2
RDB2
GND
Set the terminator switch built in the farthest inverter from the GOT to ON (100 ).
Set the terminating resistor of GOT side, which will be a terminal, to "330 ".
➠
1.4.3 Terminating resistors of GOT
The signals RSA, RSB, CSA, and CSB are not provided for
Inverter side
built-in RS485 terminal block,
or A8ERS
. Return connection is not required.
Built-in RS485 terminal block
Station No.1,
or A8ERS
GND SDA2
RDB1 SDB2
RDA1 RDA2
SDB1 RDB2
SDA1 GND
. Return connection is not required.
RDA1(RXD1+)
RDB1(RXD1-)
SDA1(TXD1+)
SDB1(TXD1-)
SG(GND)
Built-in RS485 terminal block
Station No.n,
or A8ERS
SDA1
SDB1
RDA1
RDB1
GND
* 1
SDA1
SDB1
RDA1
RDB1
GND
SDA2
SDB2
RDA2
RDB2
GND