Outputs - Siemens Simatic Manual

Fail-safe function blocks for storage and retrieval machines
MAXTOL_CAL
CAL_MODE
CALIBRATE
RELEASE
ACK
3.9.1.2

Outputs

Name
SLS_THRESHOLD
SLS_OK
TEST_REQ
BUSY
TEST_OK
DYN_LOAD_OK
STAT_LOAD_OK
MIN_LOAD_OK
MOVE_NEGATIVE_OK
S7-Distributed Safety/SIMATIC Safety - fail-safe function blocks for storage and retrieval machines
Calibration tolerance [%]
Int 10000 = 100.00%
0 <= MAXTOL_CAL <= 10000
Test mode
Bool 0: Test with constant load value
1: Test with defined load step
Start the measuring equipment test
The calibration routine is started with a positive edge at this
Bool
input. After a successful test, the time for the test interval is
restarted and output TEST_OK is again set.
Retracting
If the block identifies an overload/underload condition, then
after a positive edge at this input, the axis can be moved with
the velocity parameterized at VMAX_RELEASE in the direction
Bool
enabled by the block using
MOVE_POSITIVE_OK/MOVE_NEGATIVE_OK. While retract-
ing, motion is immediately stopped if a 0 signal is present at
this input.
Acknowledging
If a fault occurs in normal operation, then this must be reset
Bool using ACK before the system can be restarted.
The acknowledgment is only realized with a positive edge at
ACK, and has no effect in normal operation.
Data type Description
SLS limit [SLU/min]
The maximum permissible traversing velocity effective at this
time is output at this output. In normal operation, this is
Int
32767; when an overload/underload condition is detected,
VMAX_RELEASE is output here. If VMAX_RELEASE is
parameterized <= 0 then equivalent value 1 is output here.
Status, SLS limit
1: SAFE_V is less than/equal to SLS_THRESHOLD
Bool 0: SAFE_V has exceeded the SLS_THRESHOLD value.
A stop response should be initiated if this output changes to
0.
Request measuring equipment test
Bool 1: T_INTERVALL expired
0: test not required
Test status
Bool 1: test being executed
0: test not selected
Status of the test result
Bool 0: test not successful
1: test successfully completed
Status, dyn. overload
Bool 0: overload detected
1: load OK
Status, stat. overload
Bool 0: overload detected
1: load OK
Underload status
Bool 0: slack cable detected
1: load OK
Motion permitted in the negative direction (lowering)
If a 0 signal is available at this output, then it is not permissi-
Bool ble that the machine continues to travel in the negative direc-
tion. The output is then set to 0, as soon as the block detects
a slack cable condition.
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