I/O Interface Of Function Block - Siemens SIWAREX WP251 Manual

11.1.5

I/O interface of function block

The instance data block of the function block provides the "s_IO_DATA" structure. All
parameters in this structure are updated cyclically by WP251 to SIMATIC. Thus, all values
within the structure can be used directly – without reading or writing data records! The
following parameters are available for use within "s_IO_DATA" on the factory side.
Image 11-7
Parameter (read)
AWI Status
PROCESS_VAL_1
PROCESS_VAL_2
dw_PROCESS_VAL_1
dw_PROCESS_VAL_2
AWI Status
OPERATION_ERRORS
SIWAREX WP251
Manual, 12/2015, A5E37203357A
s_IO_DATA
Meaning
AWI Status bits according to data record 30
Process value according to setting in data record 14 in REAL format (default=gross/net weight)
Process value according to setting in data record 14 in REAL format (default=NAWI Status bits
according to data record 30)
Process value according to setting in data record 14 in DWORD format (default=gross/net
weight)
Process value according to setting in data record 14 in DWORD format (default=NAWI Status
bits according to data record 30)
AWI Status bits according to data record 30
Operating errors according to the "Messages" section
Communication with SIMATIC S7-1200
11.1 Integration in SIMATIC S7-1200
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