Siemens SIMATIC S7 - As200_Mb_Bittest

SIEMENS AG PRODAVE S7
Toolbox for Data Link PGs/PCs to SIMATIC S7
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as200_mb_bittest
This function checks a bit in a specified flag byte and supplies the status of this
bit via "return_wert” (= “return_value") (= boolean variable).
When bit set  return_wert = true or 1
When bit not set  return_wert = false or 0
If there were no errors, the function supplies a 0 as the return value, otherwise
an error message which can be evaluated in accordance with the error table
(see error_message).
C-Adapter
int as200_mb_bittest(int mbno,int bitno,char * retwert);
as200_mb_resetbit
This function sets a flag in the PLC to 0. It is not checked whether the flag bit
exists in the used PLC.
If there were no errors, the function supplies a 0 as the return value, otherwise
an error message which can be evaluated in accordance with the error table
(see error_message).
C-Adapter
int as200_mb_resetbit (int mbno,int bitno);
as200_mb_setbit
This function sets a flag in the PLC to 1. It is not checked whether the flag bit
exists in the used PLC.
If there were no errors, the function supplies a 0 as the return value, otherwise
an error message which can be evaluated in accordance with the error table
(see error_message).
C-Adapter
int as200_mb_setbit (int mbno,int bitno);