CMP#.ADVANCET
Description
CMP#.ADVANCET specifies a time adjustment in msec to be applied to the compare channel calculation. It allows an application to compensate for output devices, such as relays, that require a significant time to complete a mechanical operation. CMP#.ADVANCET may be changed while the compare channel is running and setpoints are armed.
Examples
Usage
Consider an application where we wish to close a relay when the channel 1 feedback source reaches 180 deg, and where the relay takes 10 ms to close. We set CMP1.STARTVAL for setpoint 1 to 180 deg and CMP1.ADVANCET to 10 ms. Suppose the feedback is spinning at 1 revolution / second. The compare channel compensates for the mechanical delay by driving its output when the source position is (180 deg – 360 deg / sec x 0.010 sec) = 176.4 deg.
Code
The following commands set the channel 1 advance to 10 msec, as described above.
--> CMP1.STARTVAL 1 180 --> CMP1.ADVANCET 10
Context
For more information please refer to Compare Engines View.
Versions
| Action | Version | Notes |
|---|---|---|
| Implemented | 02-06-00-000 |
General Information
|
Type |
Read/Write |
|
Units |
ms |
|
Range |
0->30 ms |
|
Default Value |
0 |
|
Data Type |
Float |
|
See Also |
|
|
Stored in Non-Volatile Memory |
Yes |
Variants Supported
All variants are supported.
Fieldbus Information
|
Command |
Index |
SubIndex |
Data Type |
Units |
Float Scale |
Access |
PDO Mappable |
|---|---|---|---|---|---|---|---|
|
CMP1.ADVANCET |
4500h |
01h |
Unsigned32 |
- |
- |
Read/Write |
No |
|
CMP2.ADVANCET |
4501h |
01h |
Unsigned32 |
- |
- |
Read/Write |
No |
|
Name |
ID |
Hex |
Data Type |
Access |
Units |
|---|---|---|---|---|---|
|
CMP1.ADVANCET |
31580 |
7B5C |
Unsigned32 |
Read/Write |
- |
|
CMP2.ADVANCET |
31581 |
7B5D |
Unsigned32 |
Read/Write |
- |
|
Parameter |
PNU |
Data Type |
Access |
Units |
|---|---|---|---|---|
|
CMP1.ADVANCET |
31580 |
Unsigned32 |
Read/Write |
- |
|
CMP2.ADVANCET |
31581 |
Unsigned32 |
Read/Write |
- |
