Connection Diagram - Mitsubishi Electric GT1685 Connection Manual

20.4 Connection Diagram

The following diagram shows the cable connection between the serial multi-drop connection unit and the GOT.
20.4.1 RS-485 cable

Connection diagram
RS485 connection diagram 1)
Serial multi drop
* 2
connection unit
* 1
RDA
* 1
RDB
* 1
SDA
* 1
SDB
SG
* 5
*1 Use the twisted pair cable for SDA/SDB and RDA/RDB.
*2 Set the terminating resistor selector to "330 ".
*3 Set the terminating resistor setting switch of the GOT main unit to "Disable".
*4 Connect a 330
*5 Make sure to ground a cable shield line by applying Class D Grounding.
*6 For the cable for converting D-sub9 pin connector to terminal block, refer to the following.
* 3
GOT side (9 pin) GOT side (9 pin)
Terminal
* 6
block
1.4.3 Terminating resistors of GOT
terminating resistor to the GOT to be a terminal.
 Precautions when preparing a cable(2)
* 3
GOT side (9 pin)
Terminal
* 6
block
R R
* 4
20. GOT MULTI-DROP CONNECTION
20.4 Connection Diagram
* 3
Terminal
* 6
block
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