User manual

Chapter 6 Backplane Programming
6-3
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Transducer Setup Instructions
Command
Command
Word
Comments
Transducer 1
Setup
88XYh
(X = {0,1}, Y = {1...F}). Use this instruction to program the
transducer setup parameters of transducer 1.
Digit X Digit Y
000
Scale Factor
Circular Offset
Linear Offset
Preset Value
Tachometer Response
Reserved: Must equal zero.
Bit set to "1" = Store new parameter value.
Bit reset to "0" = Leave parameter value as is.
EXAMPLE:
8801h = Store new Scale Factor.
The new parameter values are stored as Data Words immedi-
ately after the Command Word. New values are stored in BCD
format. The order is:
Scale Factor (Changing resets all offsets and preset value to 0)
Circular Offset
Linear Offset
Preset Value
Tach Response
The module checks the validity of each new parameter value.
Valid ranges are:
Scale Factor: 2 to 1024 (173X), 2 to 8192 (174X)
Circular Offset: 0 to (Scale Factor -1)
Linear Offset: 0 to (9,999 - (Scale Factor - 1))
Preset Value: 0 to (Scale Factor- 1)
Tach Response: 0 to 4
0 = 32 mSec Response
1 = 60 mSec Response
2 = 120 mSec Response
3 = 240 mSec Response / 1.0 RPM Resolution
4 = 240 mSec Response / 0.1 RPM Resolution
NOTE:
Changing the preset value does not preset the position
data. Use the Preset Transducer 1 auxiliary command to
actually preset the position.
PROGRAMMING EXAMPLE
Set the circular offset to 90, and the tach response to 120 mSec.
Command Word: 8812h
Data Words: 0090h Position Offset
0002h Tach Response
Table 6.2 Transducer Setup Instructions (continued next page)