GE 90-30 PLC Series Installation And Hardware Manual page 352

A
Serial Cable Diagrams
This section describes only a few of the many and various Point-to-Point, and Multidrop serial port
connections for Series 90 PLCs.
In the point-to-point configuration only two devices can be connected to the same communication
line. The communication line can be directly connected using RS-232 (50 feet, 5 meters
maximum) or RS-485 (4000 feet, 200 meters maximum). Modems can be used for longer
distances.
RS-232 Point-to-Point Connections
The next three figures illustrate typical RS-232 point-to-point connection to Series 90 PLCs.
WORKMASTER
RS-232
PORT
25-PIN
MALE
*
POWER SOURCE FOR POINT-TO-POINT CONNECTION 10 FEET (3 METERS) ONLY. CONVERTER POWER SOURCE BEYOND 10 FEET (3 METERS) AND FOR MULTIDROP
CONNECTION MUST BE EXTERNAL SOURCE.
* * TERMINATION RESISTANCE FOR THE RECEIVE DATA (RD) SIGNAL NEEDS TO BE CONNECTED ONLY ON UNITS AT THE END OF THE LINES. THIS TERMINATION IS MADE ON
THE SERIES 90 PLC PRODUCTS BY CONNECTING A JUMPER BETWEEN PIN 9 AND PIN 10 INSIDE THE 15-PIN D-SHELL WITH THE FOLLOWING EXCEPTION. FOR SERIES
90-70 PLCs, CATALOG NUMBERS IC697CPU731 AND IC697CPU771, THE TERMINATION FOR RD AT THE PLC IS IMPLEMENTED BY A JUMPER BETWEEN PIN 9 AND PIN 11.
A-8 Series 90-30 PLC Installation and Hardware Manual – August 2002
The cable connector for the Series 90-70 and Series 90-30 PLCs serial port must
be a right angle connector in order for the hinged door on the module to close
properly. Refer to Table A- Connector/Cable Specification.
IC690CBL705 OR EQUIVALENT RS-232/RS-485
RS-232
SHIELDED PAIRS (IC690ACC900)
PIN
PIN
TD 2 3 RD
RD 3 2 TD
RTS 4 5 CTS
CTS 5 4 RTS
DCD 8 8 DCD
DTR 20 7 GND
GND 7 1 SHLD
25-PIN 25-PIN 25-PIN
FEMALE MALE FEMALE
RS-232
PORT
Note
RS-422
CONVERTER TWISTED SHIELDED
PAIRS
PIN
DCD ( B )
2
DCD ( A ) 3
RD ( B' ) 10
RD ( A' )
11
SD ( B )
12
SD ( A ) 13
RT 9
CTS ( B' )
15
CTS ( A' ) 8
RTS ( A ) 6
RTS ( B ) 14
+5V
5
0V
7
SHLD 1
15-PIN 15- PIN
FEMALE MALE
RS-485
PORT
a44506
PIN
2
3 SD ( A )
12 SD ( B )
13 RD ( A' )
10 RD ( B ' )
SERIES
11 RD
90 PLC
9 RTS ( B )
RS-422
* *
6 RTS ( A )
PORT
14 CTS ( A' )
15 CTS ( B' )
8 +5V
5 0V
SHLD
7
*
1
*
15- PIN 15- PIN
MALE FEMALE
GFK-0356Q