Siemens SIMATIC ET 200iSP Betriebsanleitung - Seite 5
Blättern Sie online oder laden Sie pdf Betriebsanleitung für Industrielle Ausrüstung Siemens SIMATIC ET 200iSP herunter. Siemens SIMATIC ET 200iSP 6 Seiten. Distributed i/o
Auch für Siemens SIMATIC ET 200iSP: Installationshandbuch (50 seiten)
Seite drucken
Sections 13.2, 13.3 and 13.6: Analog electronic modules 4 AI I 2WIRE HART, 4 AI I 4WIRE HART, 4 AO I HART
HART Fast Mode
The HART electronic modules support the HART Fast Mode as of the following product versions / STEP 7 hardware
updates:
HART electronic modules
4 AI I 2WIRE HART
4 AI I 4WIRE HART
4 AO I HART
When HART-Fast-Mode is enabled, the HART electronic modules support the processing of HART commands as SHC
sequence (Succesive HART Command)).
This means that if a HART command with an SHC bit set for a channel is detected by the electronic module, the full HART
command processing capacity is reserved on this electronic module for this channel for approx. 2 seconds. No other HART
command processing is performed during this time on any other channels of the electronic module.
The electronic module reserves the HART command processing for this channel for another 2 seconds for each additional
HART command with set SHC bit. If a HART command is detected without a set SHC bit for this channel or if no other
command is issued for this channel within 2 seconds of the preceding HART command, the electronic module returns to
"normal" HART command processing. Result: All HART channels are processed again.
NOTICE
● During the time a HART channel of the electronic module is processing a SHC sequence, which means that full HART
processing capacity of the electronic module is reserved for this channel, the HART variables of all HART channels are
no longer updated. Their values and quality codes remain unchanged.
● HART requests for other channels are not processed and they are acknowledged accordingly.
● If a HART channel is in use by multiple clients (for example SIMATIC PDM, user program), the response provided by
the electronic module cannot be clearly directed to a specific client. HART electronic modules do not support client
management.
As of V6.0 SP5, PDM supports processing of HART requests with SHC sequences. To use this, you need to specifically
activate "HART RIO SHC Mode" in the "Communication" tab under "Options -> Settings" in PDM.
Parameters for configuration "4 AI I 2W+x", "4 AI I 4W+x" and "...I+x"
Parameter
HART retries (number of retries)
HART Fast Mode
Parameter description of "HART retries"
You can use this parameter to specify the number of retries made before a diagnostic result is output for HART
communication errors.
Parameter description of "HART Fast Mode"
When HART Fast Mode is enabled, HART electronic modules support the processing of HART commands as SHC
sequences (successive HART command)
Product information for the ET 200iSP Operating Instructions (A5E00247483-03) 03/2008
A5E02264172-05, 06/2009
Production version
9
8
9
Value range
0 to 10
● Enabled
● Disabled
STEP 7 hardware update
053 as of V3.0
057 as of V3.0
Default setting
2
Disabled
Applicability
Module
Module
5