Endress+Hauser PROFIBUS Gammapilot M FMG60 Operating Instructions Manual page 38

Operation
38
5.6.3 Cyclic data exchange
Block model of the Gammapilot M
measuring
signal
Sensor
signal
evaluation
*68
display
value
Transducer Block
Parameters that
describe the
*69
device (calibration,
*00
linearisation etc.)
medium temperature (*A7)
Numbers indicate the function group and function
The block model shows, which data are exchanged continously (i.e. by cyclic data transfer) between
the Prosonic M and the PLC. The numbers refer to the function groups and functions.
• After linearization and integration in the transducer block the "measured value"(*00) is
transmitted to the Analog-Input Block. There, it may be scaled and checked for limit
transgression, and is written to the PLC via the "out value" (*63) function.
• The function "select V0H0" (*68) determines, if the main value, or a read in value from the
PLC ("display value " (*69)) is shown on the display.
• The function "second cyclic value" (*67) determines, if the "present average pulse
rate" (*A5) or the "medium temperature" (*A7) is transmitted as the second cyclic value.
Modules for the cyclic data telegram
For the cyclic data telegram the Prosonic provides the following modules:
1. Main Process Value
This is the main measured value scaled by the Analog Input Block (*63).
2. 2nd Cyclic Value
This is either the present average pulse rate (*A5) or the medium temperature measured by an
externe PT-100 temperature probe (*A7).
3. Display Value
This is a value which can be transferred from the PLC to the Gammapilot M in order to be
shown on the display (*69).
4. FREE PLACE
This module must be applied during configuration (see below), if the 2nd cyclic value or the
display value are not to appear in the data telegram.
Display
Physical Block
with scaling
parameters of the
physical unit, e.g.
tag No.
measured
value
*00
Analog Input Function Block
parameters that are important to
the process control system,
e.g. scaling, status
pres. avg. pulserate (*A5)
*67
display value from PLC (*69)
Gammapilot M FMG 60 - PROFIBUS PA
OUT
*63
status
value
OUT SV
status
value
IN
value status
L00-FMU4XXXX-02-00-00-en-002
e.g.
PLC