UMAX130511 Version 1.00A Preliminary Documentation
– May be subject to change
117 - 141
2.4.51. Object 3yz5h: LTyz Point Response
This object determines the Y-Axis output response to changes in the X-Axis input. The value set in sub-index
1 determines the X-Axis type (i.e. data or time), while all other sub-indexes determine the response (ramp,
step, ignore) between two points on the curve. The options for this object are listed in Table 25. See Figure
16 for an example of the difference between a step and ramp response.
Object Description
Index
3yz5h (where yz = 01 to 8)
Name
LTyz Point Response
Object Type
ARRAY
Data Type
UNSIGNED8
Entry Description
Sub-Index
0h
Description
Largest sub-index supported
Access
RO
PDO Mapping
No
Value Range
11
Default Value
11
Sub-Index
1h
Description
X-Axis Type
Access
RW
PDO Mapping
No
Value Range
See Table 25 (0 or 1)
Default Value
0 (x-axis data response)
Sub-Index
2h to Bh (x = 2 to 11)
Description
LTyz Point X Response
Access
RW
PDO Mapping
No
Value Range
See Table 25 (0, 1 or 2)
Default Value
1 (ramp to response)
2.4.52. Object 3yz6h: LTyz Point X-Axis PV
This object defines the X-Axis data for the 11 calibration points on the lookup table, resulting in 10 different
output slopes.
When a data response is selected for the X-Axis type (sub-index 1 of object 3yz5), this object is constrained
such that X1 cannot be less than the Scaling 1 value of the selected control source/number, and X11 cannot
be more than the Scaling 2 value. The rest of the points are constrained by the formula below. The physical
unit associate with the data will be that of the selected input, and it will use the resolution defined in object
3yz3h, LTz X-Axis Decimal Digits PV.
MinInt16 <= X
1
<= X
2
<= X
3
<= X
4
<= X
5
<= X
6
<= X
7
<= X
8
<= X
9
<= X
10
<= X
11
<= MaxInt16
When a time response has been selected, each point on the X-Axis can be set anywhere from 1 to
86,400,000ms.
