GE Industrial Solutions HE300GEN251 - Manual (Page 39)

PAGE 40 23 SEP 1999 CH.7: WIRING
7.2 RS232/RS485 Pinout:
The following jumpers are associated with RS485 (J2).
a. JP1 - Jumper on places a 120 Ohm terminating resistor on the circuit.
b. JP2 - Places 5 volts at J2, Pin 9. JP2 consists of six individuals headers. All headers must be
placed on the right side of JP2 for RS-232 operation or placed on the left side for RS-485.
c. JP3 – Must be jumpered for RS-232 operation and must be removed for RS-485 operation.
d. JP4 – Do NOT jumper.
For more information on the hardware setup, see the GE Control Toolbox Help file.
1 2 3 4 5
6 7 8 9
RECEPTACLE ASSEMBLY
CONTACT NUMBERS
RS-232 APPLICATION
1
2
3
4
5
6
7
8
9 CD OUT*
TXD OUT
RXD IN
NO CONNECTION
GND
DSR OUT*
CTS IN
RTS OUT
RI OUT*
CONNECTED TO PIN 4
DO NOT CONNECT
100 OHM PULL DOWN
DO NOT CONNECT
RS-485 APPLICATION
GND 5
9
8
7
6
+5 VOLTS
B
4
3
2
1
A
SHIELD
CONTACT DESCRIPTION CONTACT DESCRIPTION
* CONTACTS 1, 6, AND 9 ARE
INTERNALLY CONNECTED IN
RS-232 MODE.