Emerson PACSystems RX3i - Serial Port Electrical Isolation

PACSystems™ RX3i and RSTi-EP CPU Reference Manual Section 5
GFK-2222AK October 2019
Communications 130
5.2.3.5.2 Station Manager RS-232 Signals
Pin No.
68
Signal Name
Description
1
DCD
Data Carrier Detect
2
TXD
Transmit Data
3
RXD
Receive Data
4
DSR
Data Set Ready
5
0V
Signal Ground
6
DTR
Data Terminal Ready
7
CTS
Clear To Send
8
RTS
Request To Send
9
RI
Ring Indicator
5.2.4 Serial Port Electrical Isolation
Some serial communication ports are isolated, while others are not, as indicated in the
following table:
Family
Model
COM1
COM2
COM3
RX3i
CPU310
Non-Isolated
Non-Isolated
N/A
CPU315
Non-Isolated
Non-Isolated
N/A
CPU320/CRU320
Non-Isolated
Non-Isolated
N/A
CPE302/CPE305
Non-Isolated
N/A
N/A
CPE310
Non-Isolated
Non-Isolated
N/A
CPE330
N/A
N/A
N/A
CPE400/CPL410
Non-Isolated
N/A
N/A