GE 90-30 PLC Series Installation And Hardware Manual page 357

IBM-XT
(COMPATIBLE)
RS-232
PORT
9- PIN
MALE
WHEN WIRING RS-422 /485 MULTIDROP CABLES REFLECTIONS ON THE
TRANSMISSION LINE CAN BE REDUCED BY CONFIGURING THE CABLE
IN A DAISY
CHAIN FASHION AS SHOWN BE
LOW.
MASTER
ALSO IT IS RECOMMENDED TO MAKE ANY NECESSARY CONNECTIONS
INSIDE THE CABLE CONNECTOR TO BE MOUNTED ON THE PLC. IT IS
NOT RECOMMENDED TO USE TERMINAL STRIPS TO OTHER TYPES OF
CONNECTORS ALONG THE LENGTH OF THE TRANSMISSION LINE.
* 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.
GROUND POTENTIAL: MULTIPLE UNITS, NOT CONNECTED TO THE SAME POWER SOURCE, MUST HAVE COMMON GROUND POTENTIALS OR GROUND ISOLATION FOR PROPER
OPERATION OF THIS SYSTEM.
Figure A-10. IBM-XT/Series 90 PLC Multidrop Connection
GFK-0356Q Appendix A Serial Ports and Cables
IC690CBL701 OR EQUIVALENT RS-232/RS-422
RS-232 SHIELDED PAIRS CONVERTER
(IC690ACC900)
PIN
PIN
TD 2 3 RD
RD 3 2 TD
RTS 4 5 CTS
CTS 5 20 DTR
DCD 8 8 DCD
DTR 9 7 GND
GND 7 1 SHLD
9- PIN
FEMALE
25- PIN 25-PIN
MALE FEMALE
RS-232
PORT
NOTE
CONVERTER SLAVE STATION LAST STATION
RS-422
MAKE CONNECTIONS
INSIDE D-CONNECTORS
PIN
DCD ( A ) 2
DCD ( B ) 3
RD ( A' ) 10
RD ( B' ) 11
SD ( A ) 12
SD ( B ) 13
RT 9
CTS ( A' ) 15
CTS ( B' ) 8
RTS ( A ) 6
RTS ( B ) 14
+5V 5
0V 7
SHLD 1
15-PIN 15- PIN
FEMALE MALE
RS-422
PORT
5V
POWER
SOURCE
FOR
CONVERTER
0V
PLC 15-PIN CONNECTOR
SERIES 90-30 LOCATED
ON POWER SUPPLY
SERIES 90-70 LOCATED
ON THE CPU BOARD
TO OTHER PLC's
Serial Ports and Cables
SLAVE
STATION
PIN
2 SD ( A )
3 SD ( B )
12 RD ( A' )
SERIES
13 RD ( B' )
90-70
10 RD
CPU
11 RTS ( A )
RS-422
9 RTS ( B )
PORT
6 CTS ( A' )
*
14 CTS ( B' )
15 +5V
8 0V
5 SHLD
7
1
15- PIN 15- PIN
MALE FEMALE
LAST
STATION
PIN
2
3 SD ( A )
12 SD ( B )
SERIES
13 RD ( A' )
90-30
10 RD ( B' )
PS
11 RD
RS-422
9 RTS ( A )
PORT
6 RTS ( B )
*
14 CTS ( A' )
15 CTS ( B' )
8 +5V
5 0V
7 SHLD
1
15- PIN 15- PIN
MALE FEMALE
A
A-13