The rs-232 connector, Axis 221 - unit connectors – Axis Communications 221 User Manual
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AXIS 221 - Unit Connectors
The RS-232 Connector
The AXIS 221 provides one 9-pin D-sub connector, providing the physical interface for an
RS-232 port, used for connecting accessory equipment.
A diagram of the RS-232 connector, complete with pin assignment table, is shown below.
Pin
Function
1
CD
2
- RXD
3
- TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
5
4
3
2
1
6
7
8
9