Ametek Dycor CG1100 Series User Manual page 32

9-Pin PC Connector
2
TD
3
RD
4
5
GND
8
CG1100
(Type DB9M)
Figure 3-10a. RS-232 cable connections.
8
9
4
5
RS-485
CG1100
(Type DB9M)
Figure 3-10b. RS-485 cable connections, multiple CG1100s.
3-14 | Dycor CG1100 Oxygen Analyzer
To enable RS-232 communications, DTR (Pin 4) must be active. If DTR

is not available from the host, connect Pin 8 to Pin 4 at the CG1100
using cable (AMETEK#74508SE).
NOTE
2 RD
3 TD
4 DTR
5 GND
8 CTS
PC
(Type DB9F)
Four (4) Wire
8 RX+
9 RX-
4 TX+
5 TX-
RS-485
CG1100
(Type DB9M)
25-Pin PC Connector
2
TD
3
RD
4
5
GND
8
CG1100
(Type DB9M)
Two (2) Wire
4
5
RS-485
CG1100
(Type DB9M)
3 RD
2 TD
20 DTR
7 GND
5 CTS
PC
(Type DB25F)
RX/TX+
4
RX/TX-
5
RS-485
CG1100
(Type DB9M)