22
3.8
Digital Inputs
Information.
• Up to 30 digital inputs are available – depending on the module types fitted.
• Volt-free contacts or TTL levels.
• Polarity – sets the logic state (unchanged or inverted) for the module position(s).
Page Header – Digital Inputs
To advance to
Access Page
press the
switch.
Select Digital Input
Select digital module position to be programmed.
✶
Note. In the remaining frames press the
switch to view the module position selected.
Polarity
Select the polarity required for the module position selected above:
POStVE
–
logic input state unchanged
NEGtVE
–
logic input state inverted
Return to
Select Digital Input
frame.
SELECt
dIGtAL
INPUtS
NONE
POSN 1
SELECt
POLrtY
POStVE
POSN x
NONE
NEGtVE
Select Digital Input
Input State
Input non-active
Position 1
Position 2
Position 3
Position 4
Position 5
Position 6
Polarity
Selected
Positive
Input Active
Switch Input
(volt-free)
0V
or
or
5V
0V
5V
Logic Input
(TTL)
Positive
Logic State
Negative
Negative
Input non-active
Input Active
…3
BASIC CONFIGURATION LEVEL
