Siemens SIMATIC NET ET 200SP User Manual

Configuration and operation
4.5 Telecontrol communication (CP 1542SP-1 IRC)
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
Operating Instructions, 01/2017, C79000-G8976-C426-03
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Event trigger
The value of the data point is transferred when a configurable trigger signal is fired. For
the trigger signal, the edge change (0 → 1) of a trigger bit is evaluated that is set by the
user program. When necessary, a separate trigger bit can be configured for each data
point.
Resetting the trigger tag in the bit memory area / DB:
If the memory area of the trigger tag is in the bit memory or in a data block, the trigger tag
is reset to zero when the data point value is transferred.
Transmission time of the frame
Whether the value of a data point is transferred to the communications partner immediately
after the trigger or after a delay depends on the protocol used and the settings.
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TeleControl Basic
You specify the time of transmission with the parameter "Transmission mode" in the
"Trigger" tab of the data point:
–
Unsolicited
The value is transferred immediately.
–
Conditional spontaneous
The value is transferred only when one of the following conditions is fulfilled:
- The telecontrol server queries the station.
- The value of another event with the Transmission mode “Unsolicited" is transferred.
- The fill level of the transmission buffer has reached 80% of its maximum capacity.
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DNP3 / IEC
The spontaneous transmission in these protocols depends on whether spontaneous
sending or asymmetric communication is possible in the network.
4.5.7.4
Status IDs of the data points
Status IDs of data points
The status IDs od the data points listed below are transferred for each data point in each
frame. They differ slightly in the three protocol types.
For the meaning of the status bits, see below. The "Meaning" (2nd table row) relates to the
"bit status" (3rd table row).
Generation of events if a data point status changes
With data points that were configured as an event, the change to the status bit of the status
identifiers described below also leads to an event being generated.
Example: If the value of the status "RESTART" of a data point configured as an event
changes form 1 (value not yet updated) to 0 (value updated) when the station starts up, this
causes an event to be generated.

Siemens SIMATIC NET ET 200SP Specifications

General

Brand	Siemens
Model	SIMATIC NET ET 200SP
Category	Network Router
Language	English