MAN0974-14-EN_XL7_XL7P_UM
July 6, 2022
Page 104 | 199
9.5.4 High Speed Counter Match
When either Q1 or Q2 is configured for HSC Output operation, their output state is based on a
comparison between the counter accumulator and match registers. Refer to the
for more details.
9.5.5 Stepper Function
The XL7/XL7 PRIME supports two stepper functions, one on each high-speed output when in two
counter mode. In four counter mode, the XL7/XL7 PRIME supports one stepper function
The Stepper requires five parameters (%AQs) to be set for operation. These parameters may be set at
run-
time but are ‘latched’ when the stepper
is commanded to start:
Start Frequency
(pulses per second)
Sets the frequency for the first cycle during the acceleration phase and the
frequency of the last cycle during the deceleration phase. When an
acceleration or deceleration count is specified, the Start Frequency must be
greater than 0 and must not exceed the run frequency or an error is
generated.
Run Frequency
(pulses per second)
Sets the frequency for the last cycle during the acceleration phase, the
consistent frequency during the run phase, and the frequency of the first cycle
during the deceleration mode. The Run Frequency must be greater than 0 and
must not exceed 5000Hz (standard), 400,000Hz (HE-XHSQ) or 1.0MHz (HE-
XHSQ-5)
Acceleration Count
Sets the number of cycles to occur within the acceleration phase. The
frequency of the cycles within this mode will vary linearly between the
specified Start and Run frequency. The Accel count must not equal 1 or an
error is generated. Setting this value to zero disables this phase.
Run Count
Sets the number of cycles to occur within the run phase. The frequency of the
cycles within this mode is constant at the specified Run frequency. The Run
count may be any value. Setting this value to zero disables this phase.
Deceleration Count
Sets the number of cycles to occur within the deceleration phase. The frequency
of the cycles within this phase will vary linearly between the specified Run and
Stop frequency. The Decel count must not equal 1 or an error is generated.
Setting this value to zero disables this phase.
Table 9.6
–
Five Parameters for Stepper Function