GE 90-30 PLC Series Installation And Hardware Manual page 382

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E-2 Series 90-30 PLC Installation and Hardware Manual – August 2002
Connectors
The Isolator provides two connectors, one 15 pin male D-type (PL1) and one
15 pin female D-type (PL2).
RS-485 Connectors
Pin Pin Name
PL1 1 SHLD
2 NC
3 NC
4 NC
5 5V
6 CTS (A')
7 0V
8 RTS (B)
9 NC
10 SD (A)
11 SD (B)
12 RD (A')
13 RD (B')
14 CTS (B')
15 RTS (A)
Pin Pin Name
PL2 1 NC
2 NC
3 NC
4 NC
5 5V
6 RTS (A)
7 0V
8 CTS (B')
9 RT
10 RD (A')
11 RD (B')
12 SD (A)
13 SD (B)
14 RTS (B)
15 CTS (A')
Use the terminating resistor if the Port Isolator is used in port-to-port mode or at the end of a multi-drop
configuration. To terminate the RD balanced line, place a jumper wire from pin 9 to pin 10.
A denotes – and B denotes +. A and B denote outputs and A' and B' denote inputs.
Pin Type Description
- Chassis Ground
-
-
-
- +5V power
In Clear to send -
- Signal Ground
Out Request to send +
-
Out Send data -
Out Send data +
In Read data -
In Read data +
In Clear to send +
Out Request to send -
Pin Type Description
-
-
-
-
- +5V power
Out Request to send -
- Signal Ground
In Clear to send +
- Terminating Resistor*
In Read data -
In Read data +
Out Send data -
Out Send data +
Out Request to send +
In Clear to send -
GFK-0356Q