Control Techniques Digitax ST - Page 114

Menu 8
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Parameter x.00
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114 Digitax ST Advanced User Guide
www.controltechniques.com Issue Number: 1
This parameter changes the logic polarity for digital inputs and digital outputs, but not the enable input, the relay output or the 24V output.
When this parameter is zero digital outputs are in push-pull mode. When this parameter is one either the high-side drive (negative logic polarity) or the
low-side driver (positive logic polarity) is disabled. This allows outputs to be connected in a wire-ORed configuration.
OFF (0) = Terminal is an input
On (1) = Terminal is an output
8.27 Relay source
8.28 T22 24V output source
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
2 1111
Default See Table 5-7 on page 112
Range Pr 0.00 to Pr 21.51
Update rate Read on drive reset
8.29 Positive logic select
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
11111
Default On (1)
Update rate Background read
Pr 8.29 = 0 (negative logic) Pr 8.29 = 1 (positive logic)
Inputs <5V = 1, >15V = 0 <5V = 0, >15V = 1
Non-relay Outputs On (1) = <5V, OFF (0) = >15V OFF (0) = <5V, On (1) = >15V
Relay outputs OFF (0) = open, On (1) = closed OFF (0) = open, On (1) = closed
24V output (T22) OFF (0) = 0V, On (1) = 24V OFF (0) = 0V, On (1) = 24V
8.30 Open collector output
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Default OFF (0)
Update rate Background read
8.31 T24 digital I/O 1 output select
8.32 T25 digital I/O 2 output select
8.33 T26 digital I/O 3 output select
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Default
Pr 8.31 = On (1),
Pr 8.32 and Pr 8.33 = OFF (0)
Update rate Background read