Connection Diagram - Mitsubishi Electric GOT2000 Series Connection Manual

19.4 Connection Diagram

The following diagram shows the cable connection between the serial multi-drop connection unit and the GOT.
19.4.1 RS-485 cable
■1. Connection diagram
(1) RS-485 connection diagram 1)
Serial multi drop
* 2
connection unit
* 1
RDA
* 1
RDB
* 1
SDA
* 1
SDB
SG
* 5
*1
*2
*3
*4
*5
*6
19 - 22
19.4 Connection Diagram
* 3
GOT side (9 pin)
Use the twisted pair cable for SDA/SDB and RDA/RDB.
Set the terminating resistor selector to "330 ".
In the case of GT27, GT25(Except GT2505-V), GT23, set the terminating resistor setting to "Disable".
In the case of GT2505-V, GT21, set the terminating resistor setting to "330Ω".
➠
1.4.3 Terminating resistors of GOT
In the case of GT27, GT25(Except GT2505-V), GT23, connect a 330Ω terminating resistor to the GOT to be a terminal.
Make sure to ground the shield of the cable with a ground resistance of 100
For the cable for converting D-sub9 pin connector to terminal block, refer to the following.
➠ ■2.
Precautions when preparing a cable
* 3
GOT side (9 pin)
Terminal
* 6
block
* 3
GOT side (9 pin)
Terminal
* 6
block
R R
* 4
or less.
Terminal
* 6
block