Endress+Hauser PROFI BUS Proline Promag 53 PROFIBUS DP, Руководство по эксплуатации

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Commissioning Proline Promag 53 PROFIBUS DP/PA
124 Hauser
TOTAL function
For a description of the TOTAL function, refer to TOTAL module
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Data structure of the SETTOT_MODETOT_TOTAL module combination
Example of using the SETTOT_MODETOT_TOTAL module
If the SETTOT function is set to 1 (= reset the totalizer), the value for the aggregated total is reset
to 0.
If the aggregated total of the totalizer should constantly retain the value 0, the MODETOT function
must first be set to 3 (= totalizing is stopped) and then the SETTOT function must be set to 1 (=
reset the totalizer).
DISPLAY_VALUE module
Any value (IEEE 754 floating point number), including status, can be cyclically transmitted via the
PROFIBUS master (Class 1) directly to the local display using the DISPLAY_VALUE module (slot 6).
Display value assignment to the main line, additional line or information line can be configured via
the local display itself or an operating program (e.g. FieldCare).
Output data
Status
The measuring device interprets the status in accordance with PROFIBUS Profile Specification
Version 3.0. The statuses OK, BAD and UNCERTAIN are indicated on the local display by a
corresponding symbol.
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CONTROL_BLOCK module
By means of the CONTROL_BLOCK module (slot 7), the measuring device is able to process device-
specific control variables from the PROFIBUS master (Class 1) in cyclic data transmission (e.g.
switching on positive zero return).
Supported control variables of the CONTROL_BLOCK module
The following device-specific control variables can be activated by changing the output byte from 0
→
x:
Output data Input data
SETTOT MODETOT TOTAL
Byte 1 Byte 2 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
Control Configuration Totalizer value (IEEE 754 floating point number) Status
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
Display value (IEEE 754 floating point
number) Status
Module Control variables
CONTROL_BLOCK
0
→
2: Positive zero return ON
0
→
3: Positive zero return OFF
0
→
8: UNIDIRECTIONAL measuring mode
0
→
9: BIDIRECTIONAL measuring mode
0
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24: Run SET UNIT TO BUS function