User`s manual

46
AXIS 221 - The I/O Units Connectors
Schematic Diagram - Power Terminal Block and Power Connectors
The D-Sub 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
3
2
o
o
Mode
Power
Supply
3.3V
z
z
zz
z
z
z
z
z
z
o
o
Internal
~
Switch
o
z
GND
AC
1
AC/DC+
GND/DC-
=
+
-
Axis Power Supply
PS-K 9V max 9W or
according to parts list
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