Connections; Inputs - Siemens Simatic Manual

Fail-safe function blocks for storage and retrieval machines
3.2.2

Connections

All bool variables listed in the following tables are preassigned FALSE, all integer variables are preas-
signed 0 – and all word variables preassigned W#16#0.
3.2.2.1

Inputs

Name
SLU_DEFINITION
T_SAMPLE
POS_CONFIG
POS1
POS1_VALID
POS1_REF
POS2
POS2_VALID
POS2_REF
POS_SI
POS_SI_VALID
POS_SI_REF
POS_SI_T_SAMPLE
POS_SI_MODULO
POS_SI_COUNT
POS_SI_RESOLUTION
MAX_POS
MIN_POS
S7-Distributed Safety/SIMATIC Safety - fail-safe function blocks for storage and retrieval machines
Data type Description
Definition of the unit SLU [mm]
Int Conversion factor from unit SLU to mm
1 <= SLU_DEFINITION <= 32
Block sampling time in [ms]
Int Interval in which the safety program is called
0 < T_SAMPLE <= 2 * POS_SI_T_SAMPLE
Configuration word for encoder interconnection
Bit 0: 1: Three-encoder system:
Word two direct measuring systems + motor encoder
0: two-encoder system
one direct measuring system + motor encoder
Value of the direct measuring system after scaling
[SLU]
Int
Value from the process image after scaling using
F_SCALE_SLU
Encoder signal status
Bool 1: encoder signal valid
0: encoder fault
Status, absolute reference of the encoder signal
Bool 1: encoder referenced
0: encoder not referenced
Value of the optional 2nd measuring system after
scaling [SLU]
Int
Value from the process image after scaling using
F_SCALE_SLU
Encoder signal status
Bool 1: encoder signal valid
0: encoder fault
Status, absolute reference of the encoder signal
Bool 1: encoder referenced
0: encoder not referenced
Value of the motor encoder Safety Integrated
Int [RESOLUTION]
Value from the process image
Encoder signal status
Bool 1: encoder signal valid
0: encoder fault
Status, absolute reference of the encoder signal
Bool 1: encoder referenced
0: encoder not referenced
Sampling time of Safety Integrated [ms]
Int SI sampling time configured in the drive
1 <= POS_SI_T_SAMPLE <= 1023
Modulo range safety-related position actual value
PROFIsafe [RESOLUTION]
Int
Modulo range configured in the drive
1 <= POS_SI_MODULO
Safety Integrated cycle counter
Int
Cyclic counter value of telegram 901
Scaling factor, position actual value Safety Integrated
Int p9574 [µm]
1 <= POS_SI_RESOLUTION <= 546
Int Max. permissible position [SLU]
Min. permissible position [SLU]
Int
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