2.3 I/O
CONNECTOR
The following functions are available on the 9 pin Micro D
connector on the back of the camera:
•
power supply
•
system reset function
•
RS232
Check our website for available accessories that can be
used to connect the camera to your system.
1
5
9
6
Figure 2-4 I/O connector
In the next table the function of each pin of the connector is
given:
Page 4
2005-06-27
Pin
Function
1 Power
Supply
2 RS232
Tx
3 RS232
Rx
4
(reserved)
5 (reserved)
6 Power
Ground
7 RS232
Ground
8
Ext. Reset (+)
9
Ext. Reset (-)
Note: reserved pins must be left unused to be compatible
with future versions!
In the next paragraphs more information for each category
is given.
2.3.1 Power
supply
The Dica 220 is powered by connecting the external power
pin 1 to the + pole and pin 6 to the ground of a power
supply. The voltage must be in the range 10..24 volts, but
is typically 24 Volt.
2.3.2 External
Reset
The external reset input, is connected to an onboard opto
coupler. This opto coupler is 24 Volt compatible. A
pushbutton connected between the +24V supply and pin 8
can be used as an external system reset. Pin 9 of this
connector should be connected to the ground of this 24V
supply.
2.3.3 RS232
The Dica 220 has a 3-wire RS232 interface, with a
maximum baudrate of 115200 baud.
The 3 pins of RS232 are located on 9 pin Micro D
connector as follows:
Pin 2 is the RS232 transmit data line.
Pin 3 is the RS232 receive data line.
Pin 7 is the RS232 ground.
