Siemens SIMATIC ST-1500 Function Manual page 191

Using the module
5.1 Using the technology module
Feedback bit
LD_STS_SLOT_0
LD_STS_SLOT_1
POWER_ERROR
RES_EVENT_ACK
STS_CNT
STS_DI0
STS_DI1
STS_DI2
STS_DIR
STS_DQ0
STS_DQ1
STS_GATE
STS_M_INTERVAL
STS_READY
STS_SW_GATE
190
Notes
This bit indicates by a status change (toggling) that the load request for Slot 0 (LD_SLOT_0)
has been detected and executed.
This bit indicates by a status change (toggling) that the load request for Slot 1 (LD_SLOT_1)
has been detected and executed.
For an S7-1500 technology module, this bit indicates that the supply voltage L+ is not available
or too low or that the front plug is not plugged in. For an ET 200SP technology module, this bit
indicates that the supply voltage L+ is too low.
If you have enabled the diagnostic interrupts, the respective diagnostic interrupt is triggered in
the event of errors in the supply voltage. For details on the diagnostic interrupts and the correc-
tive measures they require, refer to the device manual for the respective technology module.
If the supply voltage L+ is available at a sufficient level once again, POWER_ERROR is auto-
matically set to 0.
This bit indicates that the reset of event bit EVENT_SYNC, EVENT_CMP0, EVENT_CMP1,
EVENT_OFLW, EVENT_UFLW, EVENT_ZERO is active.
This bit indicates that at least one count pulse or a position value change has occurred in the
last ca. 0.5 s.
This bit indicates the status of digital input DI0.
This bit indicates the status of digital input DI1.
This bit indicates the status of digital input DI2 of the TM Count .
This bit indicates the count direction of the last count pulse or the direction of the last position
value change.
0 means: Down
1 means: Up
This bit indicates the status of digital output DQ0.
This bit indicates the status of digital output DQ1.
This bit indicates the status of the internal gate when using an incremental or pulse encoder.
0 means: Gate closed
1 means: Gate open
This bit indicates that at least one count pulse or a position value change was detected in the
previous measurement interval.
This bit indicates that the technology module supplies valid user data. The technology module
has been started up and configured.
This bit indicates the status of the software gate.
0 means: Gate closed
1 means: Gate open
Counting, measurement and position detection
Function Manual, 12/2017, A5E32009889-AG