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ADVANCED MICRO SYSTEMS, INC. |
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Command | Function |
| Type | NV Bytes | |
H | Set Step Size Resolution |
| Default, Immediate, Program | 2 | |
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Mnemonic | Data 1 |
| Data 2 | Result | |
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| (Name) H (n) |
| None | None |
H (Step Resolution)
This command selects step size resolution. The
The H command sets the phase switching sequence:
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| Steps per rev. |
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| Sequence |
| H Command | (1.8 deg) Motor) |
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| 1/8 Micro |
| H 0 | 1600 |
| Highest resolution smoothest |
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| 1/4 Micro |
| H 1 | 800 |
| Resonance reduced or higher resolution |
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| Half |
| H 2 | 400 |
| High torque - 1 phase on/2 phase on |
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| Full |
| H 3 | 200 |
| Highest torque - 2 phase on |
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| 1/2 Micro |
| H 4 | 400 |
| Low torque - half step |
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| Wave |
| H 5 | 200 |
| One phase on - full step |
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| This command is generally implemented during the initial customer default parameter assignment. However, | ||||||||||
| it may be implemented and changed within a program. Following, is an example: |
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| P 0 |
| Enter program mode. |
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| H 1 |
| Change the resolution to ¼ step. |
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| P |
| Exit program mode. |
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Command | Function |
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| NV Bytes | |||
| I | Set Initial Velocity |
| Default, Immediate, Program | 3 |
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| Mnemonic |
| Data 1 |
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| Data 2 | Result | ||||
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| (Name) I (n) |
| SPS | None | None |
I (Initial Velocity)
This parameter sets the initial velocity in steps per second. This is the first speed used at the beginning of acceleration. It must be slow enough that the motor can start without loosing steps (stalling).
As with all velocity parameters, the initial velocity is divided by the divide factor (D). Using the examine (X) command displays updated velocities. The initial velocity applies to:
1.All index commands (+,
2.First execute in constant velocity.
3.Decelerate to 0 in constant velocity or soft stop.
4.Final phase in home command if home speed is above initial velocity.
See “Default Table” in the beginning of this section.
This command is generally implemented during the initial customer default parameter assignment. However, it may be implemented and changed within a program. Following, is an example:
P 0 | Enter program mode. |
I 100 | Change the initial velocity to 100 SPS. |
P | Exit program mode. |
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