GE Series 90-30 PLC

I-4 Series 90-30 PLC Installation and Hardware Manual – August 2002 GFK-0356Q
I
SNP Multidrop Examples
IC690ACC90
Conn. B
Conn. A
Conn. C to APM Comm. Port
Series 90-30 PLC
IC690CBL714A Cable
Serial Cable
A
PM
PS
CPU
Figure I-3. Connecting CPU and APM to Programmer with IC690CBL714A Cable
C
P
U
C
P
U
C
P
U
RS-232/422
Converter
PLC A PLC CPLC B
IC690CBL714A
IC690CBL714A
Conn. A
C
onn. B
Conn. B
Conn. C
Conn. C
Conn. A
Figure I-4. Multidrop Arrangement for Series 90-70 TMR Redundant System