Isochronous Mode - Siemens ET 200SP Manual

Feedback bit/value Explanations
ERR_DQB This bit indicates a short-circuit or an overload at the output DQn.B or the attempted simultaneous
setting of the SET_DQA and SET_DQB control bits. If you have enabled the diagnostics interrupt
"Diagnostics DQB", the diagnostics interrupt "Error at digital outputs" is triggered when this error
occurs.
The bit is reset once you have acknowledged the error with RES_ERROR.
ERR_PULSE This bit indicates an error in the pulse output, e.g. new pulse duration value is too low.
ERR_LD This bit indicates that the value in SLOT or LD_SLOT (when MODE_SLOT = 0) is invalid and was
not accepted.
The bit is reset once you have acknowledged the error with RES_ERROR.
ERR_24V This bit indicates a short-circuit or an overload at output 24VDC If you have enabled diagnostic
interrupts, the diagnostic interrupt "Short circuit / overload of the sensor supply voltage" is triggered
when this error occurs.
The bit is reset once you have acknowledged the error with RES_ERROR.
ERR_PWR This bit indicates that supply voltage L+ is too low. If you have enabled the diagnostic interrupts,
the diagnostic interrupt "Supply voltage fault" is triggered when an error occurs.
As soon as supply voltage L+ is sufficiently high again, ERR_PWR is automatically reset.
The bit is not set if no supply voltage is present.
STS_SW_ENABLE This bit indicates the status of the SW enable.
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•
STS_READY This bit indicates that the module is supplying valid user data. The module is started and config-
ured.
STS_LD_SLOT A status change (toggling) of this bit indicates that the LD_SLOT load request was detected and
executed (when MODE_SLOT = 0).
STS_DI This bit indicates the status of the digital input DIn.0.
STS_DQA This bit indicates the status of the digital output DQn.A.
STS_DQB This bit indicates the status of the digital output DQn.B.
STS_ENABLE This bit indicates that an output sequence is active.
SEQ_CNT This value indicates the number of completed output sequences as sequence counter.
Reserved Reserved bits are set to 0.
4.1.7

Isochronous mode

The technology module supports the "Isochronous mode" system function. If you are not
using a hardware enable, the output sequence starts in isochronous mode at time T
the SW_ENABLE control bit has been set.
Further information
You will find a detailed description of isochronous mode in:
● In the isochronous mode function manual as a download from the Internet
(https://support.industry.siemens.com/cs/ww/en/view/109755401).
● PROFINET with STEP 7 function manual available for download on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/49948856).
Technology Module TM Pulse 2x24V (6ES7138‑6DB00‑0BB1)
Manual, 05/2019, A5E35061186-AB
0 means: SW enable not active
1 means: SW enable active
Configuring/address space
4.1 Pulse output (single pulse) mode
after
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