GFK-0356Q Appendix I SNP Multidrop I-3
I
MultiDrop Cable Wiring Diagram
DCD ( A )
DCD ( B )
RD ( A' )
RD ( B' )
SD ( A )
SD ( B )
RT
CTS ( A' )
CTS ( B' )
RTS ( A )
RTS ( B )
+5V
0V
SHLD
2
3
10
11
12
13
9
15
8
6
14
5
7
1
SD ( A )
SD ( B )
RD ( A' )
RD ( B' )
RD
RTS ( A )
RTS ( B )
CTS ( A' )
CTS ( B' )
+5V
0V
SHLD
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.
NOTE
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 BELOW.
MINI-
CONVERTER
PROGRAMMER
FIRST SLAVE
STATION (PLC)
LAST SLAVE
STATION (PLC)
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.
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.
PLC 15-PIN CONNECTOR
SERIES 90-30 LOCATED
ON POWER SUPPLY
SERIES 90-70 LOCATED
ON THE CPU BOARD
PIN
15- PIN
MALE
*
15- PIN
FEMALE
PIN
2
3
12
13
10
11
9
6
14
15
8
5
7
1
RS-422
MAKE CONNECTIONS
INSIDE D-CONNECTORS
TO OTHER PLC's
If applicable
PIN
SD ( A )
SD ( B )
RD ( A' )
RD ( B' )
RD
RTS ( A )
RTS ( B )
CTS ( A' )
CTS ( B' )
+5V
0V
SHLD
*
2
3
12
13
10
11
9
6
14
15
8
5
7
1
15- PIN
MALE
To Miniconverter on
Programmer Serial
Cable
To First Slave PLC
To Second Slave PLC
Figure I-2. Multidrop Cable Wiring Diagram
To Next Page
Loading...
