Axis 200 - Page 77

AXIS 200 User’s Manual Appendix E: The Auxiliary IO Port
75
Note:
❏ You can also control the relay switch via a CRON script using the
snapshot command.
Digital Inputs
The two digital inputs on pins 6 and 7 of the connector make it
possible to trigger your snapshots on chosen events. However, you
must use a CRON script to implement this functionality. See “CRON
Script” on page 39.
By connecting a digital microcircuit to a particular door for example,
it is possible to take a snapshot on each occasion that it opens or
closes.
Schematic diagram of the AXIS 200 Auxiliary Connector
- displaying a possible application
Status information for each of the two digital inputs is presented
within a text string. The status of the inputs can be ‘read’ by clicking
on the
input.txt
parameter in the above URL. The string will
amongst other things define the time and duration of the last trigger
event for the each input:
input:1 current:0 last:1 time:12.22 pulse:2
input:2 current:1 last:0 time:14.46 pulse:6
o
o
CPU
.
o
x
6
8
o
o
Digital input 1
GND
Relay
Switch
5V
Mains Power
o
o
o
o
o o
24V DC
o
o
7
o
Digital input 2
.
.
Micro-switched door
.
Infra-red switch
AXIS 200
Aux.
Con.
Appliance
o o
Relay +
Relay -
Optional
Relay
Switch
1
2