GE Series 90-30 PLC - Logic Diagram

GFK-0356Q Appendix E IC690ACC903 Port Isolator E-3
E
Logic Diagram
Optical Isolation
Always on
(single port mode)
RTS Driven
(multidrop mode)
+5V
Multidrop
Switch
CTS(B')
CTS(A')
RTS(B)
RTS(A)
14
6
14
6
Output Enable
Output Enable
RD(B')
RD(A')
SD(B)
SD(A)
13
12
13
12
Ground 2Ground 1
DC/DC
Converter
+5Vdc
GND
+5Vdc
GND
RTS(B)
RTS(A)
CTS(B')
CTS(A')
15
8
15
8
15-pin male D-connector
PL1
15-pin female D-connector
PL2
SD(B)
SD(A)
RD(B')
RD(A')
11
10
11
10
RT
121 ohms
9
Figure E-2. IC690ACC903 Block Diagram