Rs-485 Cable - Mitsubishi Electric GOT2000 Series Connection Manual

5.3.2

RS-485 cable

■1. Connection diagram
(1) RS-485 connection diagram 1)
Interface
converter
(RC-77)
TXD+
TXD-
FG
RXD+
RXD-
*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.
Terminating resistor should be provided outside for a interface converter which will be a terminal, with the terminating switch
turned OFF.
*3 Connect FG grounding to the appropriate part of a cable shield line.
(2) RS-485 connection diagram 2)
Interface
converter
(SI-30A)
SD/RD+
SD/RD-
GND
+5VIN
*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.
Turn ON the terminating switch of an interface converter which will be a terminal.
*3 Connect FG grounding to the appropriate part of a cable shield line.
Terminating resistor(100Ω 1/2W)
* 3
Signal name
+
-
Terminating resistor(100Ω 1/2W)
Temperature
* 2
controller side
* 3
Signal name
+
-
* 2
Temperature
controller side
+ * 1
- * 1
* 3
Model of temperature controller
PXR3 PXR4 PXR5/9
Pin No. Pin No. Pin No.
15 7 1
14 8 2
* 2
1
+ *
1
- *
* 3
Model of temperature controller
PXR3 PXR4 PXR5/9
Pin No. Pin No. Pin No.
15 7 1
14 8 2
5.3 Connection Diagram
Temperature
controller side
* 1
+
* 1
-
PXG4 PXG5/9 PXH9
Pin No. Pin No. Pin No.
7 1 14
8 2 16
Temperature
controller side
* 1
+
* 1
-
PXG4 PXG5/9 PXH9
Pin No. Pin No. Pin No.
7 1 14
8 2 16
5 - 9
5