9. Call the SFB 49:
n SW_EN = TRUE (edge 0-1)
n JOB_REQ = TRUE (edge 0-1)
n OUTP_VAL: Enter the duty factor such as 50%.
ð
n The 1. pulse train job is started and then if present the 2. pulse train job.
n Via STS_EN you get the current status of the pulse train output. As long as
the required number of pulses is output, STS_EN returns TRUE. STS_EN
returns FALSE if either the requested number of pulses has been output or
output with SW_EN = FALSE was terminated early.
n On error JOB_ERR = TRUE and the cause of the error is returned in
JOB_STAT
10. To reset JOB_REQ, call SFB 49 again with the same parameters and JOB_REQ =
FALSE.
11. Call the SFB 49 cyclically:
n SW_EN = FALSE
n Via STS_EN you get the current status of the pulse train output.
12. As soon as JOB_DONE returns TRUE, you can transfer additional pulse train jobs
by repeating the steps 1 to 6.
13. By resetting of SW_EN (SW_EN = FALSE) the output is immediately stopped.
14. With reading jobs, you can find the values to be read in the parameter JOB_OVAL
in the instance DB at address 20.
As long as only one pulse train job is defined and currently being processed, there is the
possibility to attach a 2. pulse train job to the 1. pulse train job.
1.
Call the SFB 49:
n SW_EN = TRUE (edge 0-1)
n JOB_VAL = Enter a value for the number of pulses here.
n JOB_ID = 09h: Write number of pulses for the 2. pulse train job.
n JOB_REQ = TRUE (edge 0-1)
ð
n From JOB_VAL the number of pulses for the 2. pulse train job is trans-
mitted.
n JOB_DONE is FALSE during the SFB run.
n On error JOB_ERR = TRUE and the cause of the error is returned in
JOB_STAT
2. To reset JOB_REQ, call SFB 49 again with the same parameters and JOB_REQ =
FALSE.
3. Call the SFB 49:
n SW_EN = TRUE
n JOB_VAL = Enter a value for the period duration here.
n JOB_ID = 0Ah: Write period duration for the 2. pulse train job.
n JOB_REQ = TRUE (edge 0-1)
ð
n From JOB_VAL the period duration for the 2. pulse train job is transferred.
n JOB_DONE is FALSE during the SFB run.
n On error JOB_ERR = TRUE and the cause of the error is returned in
JOB_STAT
4. To reset JOB_REQ, call SFB 49 again with the same parameters and JOB_REQ =
FALSE.
Extend a running pulse
train job
VIPA SPEED7
Integrated Standard
System Function Blocks > SFB 49 - PULSE - Pulse width modulation
HB00 | OPL_SP7 | Operation list | en | 18-30 773
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