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4-5
4
Table 4-4. Serial Port Connector Pin Assignments for the CPTM04
Transition Module (COM1)
Pin
Number
Signal
Mnemonic
Signal Description
Pin
Number
Signal
Mnemonic
Signal
Description
1
DCD
Data set has detected
the data carrier
2
DSR
Data set is ready to
establish a
communications
link
3
RX
Receives serial data
input from
communication link
4
RTS
UART is ready to
exchange data
5
TX
Sends serial data to
communication link
6
CTS
Data set is ready to
exchange data
7
DTR
Data set is ready to
establish a
communication link
8
RI
Modem has
received a
telephone ringing
signal
8
GND
Ground
10
GND
Ground
Solution Systems Technologies Inc.
720-565-5995 | [email protected] | www.solusys.com
Solution Systems Technologies Inc.
720-565-5995 | [email protected] | www.solusys.com