Siemens SIMATIC S7 - Technical Description; 1.1 Application; 1.2 Design

SIEMENS AG PRODAVE S7
Toolbox for Data Link PGs/PCs to SIMATIC S7
2
The PRODAVE functions can be divided into 3 basic types:
1.1 Basic Functions
- initialise and de-initialise system (load_tool, unload_tool).
- activate connection (new_ss).
1.1.1 Functions for Data Transfer to S7 300/400
- read output bytes from PLC (a_field_read).
- write output bytes (a_field_write).
- read input bytes from PLC (e_field_read).
- read data bytes from a block DB (d_field_read).
- write data bytes to a block DB (d_field_write).
- read flag bytes from PLC (m_field_read).
- write to flag bytes in PLC (m_field_write).
- status test of a flag (mb_bittest).
- set and reset flag (mb_setbit, mb_resetbit).
- read timer words from PLC (t_field_read).
- read counter words from PLC (z_field_read).
- overwrite counter words in PLC (z_field_write).
- read mixed data (mix_read).
- write mixed data (mix_write).