Siemens SIMATIC ET 200S Operating Instructions Manual page 357

Notes on the feedback signals
Checkback signal
ACK_SW_ENABLE
ERR_24V
ERR_DO
ERR_PARA
ERR_PULS
STS_ DI
STS_DO
STS_ENABLE
SEQ_CNT
Measured value of the
current
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07
5.9 Technical Specifications for Programming, Reference Lists
Notes
Indicates the status of the software enable pending at the 2PULSE.
Indicates a short circuit or drop of the encoder supply.
Indicates a short circuit at the digital output.
Indicates a parameter assignment error.
"Pulse output" operating mode:
Indicates a pulse output error. If the pulse duration is reduced after expiration of the on-delay
so the time is less than the time already output, this is detected by the 2PULSE.
The 2PULSE deletes the feedback bit ERR_PULS next time the output sequence starts.
"Pulse train" operating mode:
Indicates a pulse output error. If the number of pulses is reduced after expiration of the on-
delay and the smaller number of pulses is already output, this is detected by the 2PULSE.
The 2PULSE deletes the feedback bit ERR_PULS next time the output sequence starts.
"On/Off-delay" mode:
Indicates a pulse output error if the pulse duration or interpulse period is too short.
The 2PULSE deletes the ERR_PULS feedback bit at the next positive edge of the software
enable or at the next edge at the DI digital input.
Indicates the signal level at the digital input DI.
Indicates the signal level at the digital output DO.
"Pulse output" operating mode:
Is set at the start of the output sequence until the pulse duration expires. If you delete the
software enable (SW_ENABLE) or the 2PULSE detects a pulse output error (ERR_PULS),
STS_ENABLE is deleted.
"Pulse-width modulation" operating mode:
Set at start of output sequence. If you delete the software enable (STS_ENABLE),
SW_ENABLE is deleted.
"Pulse train" operating mode:
Is set at the start of the output sequence until the output of the last pulse. If you delete the
software enable (SW_ENABLE) or the 2PULSE detects a pulse output error (ERR_PULS),
STS_ENABLE is deleted.
"On/Off-delay" mode:
Indicates the status of the software enable (SW_ENABLE) detected by the 2PULSE.
"Frequency output" operating mode:
Set at start of output sequence. If you delete the software enable (STS_ENABLE),
SW_ENABLE is deleted.
Counts the completed output sequences in the "Pulse output", "Pulse train" and "On/Off-
delay" operating modes.
No function in the "Pulse width modulation" and "Frequency output" operating modes.
Current at the DO as a SIMATIC S7 analog value
2PULSE
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