Communications, 8 communications, Chapter 2 installation 15 – SATEC C191HM User Manual
Page 24: Figure 2-13 connection for 9-pin modem connector
Chapter 2 Installation
15
2.2.8 Communications
The C191HM is provided with an RS-232 or RS-485 communication port.
Connections can be made as follows:
RS-232: distance of up to 15 meters, one C191HM to one computer/PLC, using
a flat or twisted pair cable of 0.33mm2/22AWG
RS-485: distance of up to 1200 meters, up to 32 instruments on one multi-drop
line
DSR/CTS
RS-232
POWERMETER
RxD
14
SG
TxD
15
25-PIN DB25 MALE CONNECTOR
MODEM
TxD
GND
2
7
C99-11012
3
RxD
Figure 2-12 Connection for 25-pin Modem Connector
9-PIN DB9 MALE CONNECTOR
POWERMETER
14
15
13
RS-232
RxD
TxD
SG
TxD
3
GND
5
c99-11013
MODEM
RxD
2
Figure 2-13 Connection for 9-pin Modem Connector
RS-232
POWERMETER
RxD
14
SG
TxD
15
13
25-PIN DB25 FEMALE CONNECTOR
IBM PC/COMPATIBLE
RTS
CTS
5
4
TxD
DTR
DSR
RxD
GND
6
20
2
7
3
c99-11014
Figure 2-14 RS-232 Simple 3-Wire Computer Connection, 25-pin