Mitsubishi Electric GOT2000 Series Connection Manual page 169

(9) RS-485 connection diagram 9)
GOT side
*1 Pin No. of temperature controller differs depending on the model. Refer to the following table.
*2 Terminating resistor should be provided for a temperature controller which will be a terminal.
*3 Set the 2-wire type ←→ 4-wire type/terminating resistor setting switch of the RS-232/485 signal conversion adapter as follows.
2-wire type ←→ 4-wire type: 2-wire type (1 pair)
Terminating resistor: 110Ω
➠
*4 Connect FG grounding to the appropriate part of a cable shield line.
■2. Precautions when preparing a cable
(1) Cable length
The length of the RS-485 cable must be 500m or less.
(2) GOT side connector
For the GOT side connector, refer to the following.
➠ 1.4.1GOT connector specifications
(3) FUJI temperature controller side connector
Use the connector compatible with the FUJI temperature controller side.
For details, refer to the user's manual of the FUJI temperature controller.
■3. Connecting terminating resistors
(1) GOT side
(a) For GT27, GT25(Except GT2505-V), GT23
Set the terminating resistor setting switch of the GOT main unit to "Enable".
(b) For GT2505-V, GT21
Set the terminating resistor selector to "110Ω".
For the procedure to set the terminating resistor, refer to the following.
➠ 1.4.3Terminating resistors of GOT
(2) FUJI temperature controller side
When connecting a FUJI temperature controller to the GOT, a terminating resistor must be connected.
➠
5.5 Temperature Controller Side Setting
Temperature
* 3
controller side
+ * 1
SDA
- * 1
SDB
RDA
* 4
RDB
SG
Terminating resistor(100Ω 1/2W)
Signal
PXR3 PXR4
name
Pin No. Pin No.
+ 15 7
- 14 8
1.4.4 Setting the RS-232/485 signal conversion adaptor
Temperature
controller side
* 4
* 2
Model of temperature controller
PXR5/9 PXG4 PXG5/9
Pin No. Pin No. Pin No.
1 7 1
2 8 2
5.3 Connection Diagram
+ * 1
- * 1
PXH9 PXF4 PXF5/9
Pin No. Pin No. Pin No.
14 7 25
16 8 26
PUMA/B
Pin No.
5
3
4
5 - 21