Siemens SIMATIC ET 200S Function Manual page 15

Figure 3-2
The I/O addresses in the symbol browser shown in the figure have the following meanings:
● "PIB" = Peripheral Input Byte
● "PQB" = Peripheral Output Byte
Parameter transfer
The I/O variable for the I/O inputs is transferred to the periIn input parameter.
The prepared data for the I/O outputs are supplied by the function block at the periOut output
parameter. The periOut output parameter must be assigned to the I/O variable for the I/O
outputs.
Note
When booting the firmware of the ET 200S frequency converter from the MMC card, it may
take more than 500 ms for the ET 200S frequency converter to ramp up.
To avoid I/O area access errors when the frequency converter has not yet ramped up, accesses
to the I/O inputs and outputs of the frequency converter must be performed with the
_getSafeValue and _setSafeValue system functions (see sample program UNIT E_FC_ctr).
Note
For additional information, refer to:
● SIMOTION SCOUT online help
● Programming Manuals for the relevant programming languages, such as:
– SIMOTION ST, Structured Text Programming Manual
– SIMOTION MCC, Motion Control Chart Programming Manual
– SIMOTION LAD/FBD, Ladder Diagram and Function Block Diagram Programming
These documents are shipped with SIMOTION SCOUT in electronic form.
Supplement for the ET 200S frequency converter
Function Manual, 01/2015
Addressing with I/O variable
Manual
3.2 Addressing the ET 200S frequency converter
Programming
15