Siemens SIMATIC S7 - Enhanced Functions for Data Handling in PG;PC

SIEMENS AG PRODAVE S7
Toolbox for Data Link PGs/PCs to SIMATIC S7
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4.2 Enhanced Functions for Data Handling in PG/PC
boolean_byte
The function boolean_byte converts eight logical values (PC-display) to a byte.
The transferred pointer should point to a char field with the following structure:
char buff[8] buff[0] buff[1] buff[2] buff[3] buff[4] buff[5] buff[6] buff[7]
return value bit 0 bit 1 bit 2 bit 3 bit 4 bit 5 bit 6 bit 7
C-Adapter
char boolean_byte(char * buff);
byte_boolean
The function byte_boolean converts a byte to eight logical values (PC-display).
The transferred pointer should point to a char field with the following structure:
char buff[8] buff[0] buff[1] buff[2] buff[3] buff[4] buff[5] buff[6] buff[7]
Value bit 0 bit 1 bit 2 bit 3 bit 4 bit 5 bit 6 bit 7
C-Adapter
void byte_boolean(char wert, char * buff);