Rockwell-automation 57C422B 2 Axis Servo Module Uživatelský manuál stáhnout pdf (Strana 61)

PROGRAMMING

4-33

Feedback registration enable and/or gearing registration

enable is used to sense the respective registration digital

input. If the enable is set, any transition of the registration

input will cause the current gearing or feedback position to

be stored in registers 84 through 87. This is useful when

attempting to synchronize the axis to an external event. See

section 4.31 for more options regarding registration. Also see

section 4.37 for a description of the "feedback registration

sensed" and "gearing registration sensed" bits (R72, b8 and

b9).

The change gear ratio

command is used to alter the gear

ratio set in 25/26 when you are running in the gearing mode.

This command can affect physical motion in the system.

The set feedback position on feedback marker pulse

command enables passive homing. This command does not

cause any motion. It only enables the logic such that when a

feedback marker pulse is detected, the value in registers 17,

18 is assigned to the axis feedback position. Marker pulses

are enabled in register 2. Note that there are other methods

of homing described in section 4.35.

The set gearing position on gearing marker pulse

command

enables passive homing for the gearing encoder. On the next

gearing encoder marker pulse, the value in registers 17, 18 is

assigned to the axis gearing position. Marker pulses are

enabled in register 2. Note that there are other methods of

homing described in section 4.35.

Figure 4.35 – Command Register 67

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 121 122

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Rockwell-automation 57C422B 2 Axis Servo Module Uživatelský manuál Strana 61