Ametek 1746 LDT Interface Card Instrukcja Użytkownika Strona 11
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Chapter 3: Set-Up & Programming
Installation & Programming Manual
8
NOTE: See Chapter 4: Application Examples for dealing with 32 bit numbers..
Parameter 4 is used to enable or disable the Turns Counting software and to establish the number of
turns over which the scale factor develops when Turns Counting is enabled. Parameter 4 must be set
to zero when sending this command for multi-turn configurations 2 or 5.
When parameter 4 is set to zero, Turns Counting is disabled and the system will operate as a single turn
system. The scale factor programmed in parameter 2 and 3 will be the number counted to over one
rotation of the resolver. The position count will roll over to zero and repeat the same scale factor count
for each additional rotation of the resolver.
When parameter 4 is set to any value other than zero, the value will be the number of turns required to
count to the scale factor number programmed in parameters 2 and 3. When turns counting is enabled,
the count will never roll over and start again at zero. The count will continue to increase or decrease by
the per turn count change established by parameter 2, 3 and 4. Rotation in the reverse direction will
result in a negative position value. Maximum position values can range from -2,147,483,648 to
2,147,483,647.
Example 1: Parameters 2 and 3 (scale factor) set at 1200
Parameter 4 (turns counting) set at 1
The count will increase from 0 to 1199 over the first rotation, 1200 to 2399 over the second, 2400 to
3599 over the third and will continue changing at this rate per turn for subsequent rotations.
Example 2: Parameters 2 and 3 (scale factor) set at 500,000
Parameter 4 (turns counting) set at 1000
The count will increase from 0 to 499 over the first rotation, 500 to 999 over the second, 1000 to 1499
over the third and will continue counting at this rate to 499,999 at the end of turn 1000. Additional
rotation in the same direction will result in the count increasing beyond 500,000 at the same rate per
turn.
NOTE: Turns Counting is only valid for modules set up for configuration 3, 4 or 6.
NOTE: The maximum resolution of the module is 4096 counts per turn. Scale factors that are less
than 4096 per turn will count in one count increments. Scale factors greater than 4096 per
turn will count to the scale factor number in 4096 steps which will not be one count
increments.
Parameter 1 is used to indicate which resolver input channel the scale factor and turns count applies to.
On two axis (not multi-turn dual resolver) modules Command 2 will be programmed twice.
Parameters 2, 3 and 4 are used to establish how position data will count as the resolver rotates.
- Series 1746R 1
- Contents 3
- 1.1: Face Panel Description 5
- Chapter 2: Installation 6
- Getting Started 7
- I/O Image Table 7
- Output Image Table 7
- Command Bit Register (Word 0) 8
- Programming Bit (15) 8
- Data Format Bit (7) 8
- Command 1: Configuration 9
- Status Bit Register (Word 0) 15
- Appendix A: Specifications 25
- Appendix B: Wiring Diagram 26
- Appendix B: Wiring Diagram 27
- 1746R.M1R1 28
- 10/01.Z56 28
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