Siemens SIMATIC S5-115U User Manual page 399

S5-115U Manual
The CONTROL Block - FB247 -
FB247 updates the job status word for a specific job or indicates which job is currently in progress.
Calling FB247 (Example)
STL
: JU
NAME : CONTROL
SSNR :
A-NR :
ANZW :
PAFE :
:
***
Description of the CONTROL Function
The CONTROL function requires the following parameters:
• SSNR - interface number
• A-NR - number of the job to be monitored
• ANZW - job status word where the result is to be stored
• PAFE - parameter assignment error byte
The CONTROL block implements different functions depending on the job number.
A-NR="0"
The CP is asked which job is currently in progress. The CP writes the number of the current job in
job location 0. The contents of this location are transferred to the low-order byte of the job status
word when the CONTROL block is processed.
A-NR "0"
The block executes in CONTROL DIRECT mode:
• The status of a specific job is interrogated.
• The job status word is updated.
Processing of this block does not depend on the RLO. However, FB247 should be called in the cyc-
lic part of the control program.
EWA 4NEB 811 6130-02b
FB 247
KY 0,10
KY 0,101
FW 20
FY 22
Integral Blocks
CSF/LAD
FB247
CONTROL
SSNR
A-NR
ANZW PAFE
11-25