Control Techniques Digitax ST Advanced User's Manual page 28

Parameter
Menu 1
structure
1.15 Preset selector
Bit SP
Coding
Range 0 to 9
Default 0
Update rate 4ms read
Pr 1.15 defines how the value of Pr 1.50 is derived as follows:
Value of Pr 1.15
0
1
2
3
4
5
6
7
8
9
*Pr 1.45 to Pr 1.47 can be controlled by digital inputs to define the value of Pr 1.50 as follows:
**The presets are selected automatically in turn. Pr 1.16 defines the time between each change.
Pr 1.47 Pr 1.46
0 0
0 0
0 1
0 1
1 0
1 0
1 1
1 1
Pr 1.49 and Pr 1.50 then define the reference as follows:
Pr 1.49 Pr 1.50
1 1 Analog reference 1 (Pr 1.36)
1 >1 Preset defined by Pr 1.50 (Pr 1.21 to Pr 1.28)
2 1 Analog reference 2 (Pr 1.37)
2 >1 Preset defined by Pr 1.50 (Pr 1.21 to Pr 1.28)
3 x Preset defined by Pr 1.50 (Pr 1.21 to Pr 1.28)
4 x Keypad reference (Pr 1.17)
5 x Precision reference (Pr 1.18 and Pr 1.19)
1.16 Preset reference selector timer
Bit SP
Coding
Range 0 to 400.0 s
Default 10.0
Update rate Background read
This parameter defines the time between preset reference changes when Pr 1.15 is set to 9. If Pr 1.48 is set to 1 then the preset counter and timer are
reset and preset 1 will be selected.
28
Keypad and
Parameter x.00
display
FI DE Txt VM DP ND
Pr 1.50
Selected by terminal input*
1
2
3
4
5
6
7
8
Selected by timer**
Pr 1.45 Pr 1.50
0 1
1 2
0 3
1 4
0 5
1 6
0 7
1 8
Reference
FI DE Txt VM DP ND RA NC NV
1
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Parameter Advanced parameter
description format descriptions
RA NC NV PT US RW BU
1 1
PT US RW BU
1 1
Serial comms Electronic
protocol nameplate
PS
1
PS
1
Digitax ST Advanced User Guide
Issue Number: 1
Performance