Emerson ControlWave EFM 4710A Instruction Manual page 72

Table 2-4A - RS-232 Ports (1/2/4/8) and RS-485 Ports (3/5/9) Pin Assignments
Pin Signal
# RS-232
1 DCD Data Carrier Detect Input
2 RXD Receive Data Input
3 TXD Transmit Data Output
4 DTR Data Terminal Ready Output
5 GND Signal/Power Ground
6 DSR Data Set Ready Input
7 RTS Request To Send Output
8 CTS Clear To Send Input
* ISOGND on Isolated RS-485 Ports Only! Note: Pin-9 not used
Table 2-4B - RS-232 Port (COM1) Connector Pin Assignments
(COM1 Connectors, i.e., Circular Local Port & D-Type 'C1' on CPU)
COM1 Signal
Pin # RS-232
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7* RTS
8* CTS
* =
RTS connected to CTS
5 = GND
4 = DTR
8 = CTS
3 = TXD
7 = RTS
2 = RXD
6 = DSR
1 = DCD
9-Pin Female
"D" Connector
Figure 2-13A - PC Connected to ControlWave EFM via D-Type Local Port
(Use Null Modem Cable - Bristol Part Number 392843-01-3)
2-20 / Installation & Operation
Description:
RS-232 Signals
Description:
RS-232 Signals
Data Carrier Detect Input
Receive Data Input
Transmit Data Output
Data Terminal Ready Output
Power Ground
Data Set Ready Input
Request To Send Output
Clear To Send Input
(Looking into
To P2 Pin-5
Wire Terminal Side
To P2 Pin-6
Cable Connectors)
To P2 Pin-2
To P2 Pin-1
To P2 Pin-3
To P2 Pin-4
To P2 Pin-7
Signal
RS-485
N/A
RXD- Receive Data - Input
TXD- Transmit Data - Output
TXD+ Transmit Data + Output
GND/ISOGND* Ground/Isolated Ground
RXD+ Receive Data + Input
N/A
N/A
Wire Local Port
Color RS-232 Pin #
Green
White
Red
Brown
Black
Control
of
or
vice
versa
Description:
RS-485 Signals
1
7
2
4
6
Wave EFM
1 = DCD
6 = DSR
2 = RXD
7 = RTS
3 = TXD
8 = CTS
4 = DTR
5 = GND
9-Pin Female
"D" Connector
CI-ControlWave EFM