Digiplexer 246 v2.5.x User Manual – 11/2010
Page 86
Head Office : Parc d’activites Kennedy - 20, avenue Neil Armstrong – F-33700 Bordeaux-Merignac (France)
Tel +33 (0)5 57 928 928 – Fax +33 (0)5 57 928 929 –
–
www.audemat.com
APPENDIX B: OPTIONAL INPUT / OUTPUT CONFIGURATION
OPTIONAL INPUT / OUTPUT CONFIGURATION
B.1.
Digital inputs
This module provides 16 digital inputs and can work in 2 different modes depending on jumper
configuration:
Schematic diagram:
¾
‘Internal power supply’ mode (default mode):
With this mode, all common pins are internally linked to the ground.
When a digital input is connected with the common, this input’s value switches to ‘1’; otherwise it
stays on ‘0’.
¾
‘External power supply’ mode:
With this mode, all ‘common’ pins are linked together but they are no longer connected to the
ground. Now, an external power supply is necessary.
An external power supply between 5 and 25 V is applied to the common. If a digital input is
connected to the ground, this input’s value switches to ‘1’; otherwise it stays on ‘0’.
Select internal or external power supply mode:
¾
‘Internal power supply’ mode (default mode):
Two jumpers shall be installed on the selected pins
¾
‘External power supply’ mode:
DIGITAL
INPUT
Contact
DIGITAL
INPUT
Contact
- +
2 jumpers
