Endress+Hauser Proline Prosonic Flow 93, Руководство по эксплуатации

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Commissioning Proline Prosonic Flow 93 PROFIBUS DP/PA
108 Hauser
6.6.3 Description of the modules
AI module (Analog Input)
The corresponding measured variable, including the status, is cyclically transmitted to the
PROFIBUS master (Class 1) by means of the AI module (slots 1 to 8). The measured variable is
represented in the first four bytes in the form of a floating point number in accordance with the
IEEE 754 standard. The fifth byte contains standardized status information corresponding to the
measured variable.
Further information on the device status
→
ä
137
Input data
Assignment of the measured variables to the AI module
The AI module can transmit different measured variables to the PROFIBUS master (Class 1).
The measured variables are assigned to the Analog Input function blocks 1 to 8 by means of the local
display or with the aid of an operating program (e.g. FieldCare) in the CHANNEL function:
BASIC FUNCTION (G)
→
PROFIBUS DP (GBA)
→
FUNCTION BLOCKS (612)
→
BLOCK SELECTION (6120): Selection of an Analog Input function block
→
CHANNEL (6123): Selection of a measured variable
Possible settings
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
measured variable (IEEE 754 floating point number) Status
Measured variable ID for CHANNEL
function
VOLUME FLOW CHANNEL 1 (factory setting AI function block 1) 273
SOUND VELOCITY CHANNEL 1 (factory setting AI function block 2) 293
FLOW VELOCITY CHANNEL 1 (factory setting AI function block 3) 309
VOLUME FLOW CHANNEL 2 (factory setting AI function block 4) 529
SOUND VELOCITY CHANNEL 2 (factory setting AI function block 5) 549
FLOW VELOCITY CHANNEL 2 (factory setting AI function block 6) 565
AVERAGE VOLUME FLOW (factory setting AI function block 7) 567
AVERAGE SOUND VELOCITY (factory setting AI function block 8) 570
SIGNAL STRENGTH CHANNEL 310
SIGNAL STRENGTH CHANNEL 2 566
VOLUME FLOW SUM 568
VOLUME FLOW DIFFERENCE 569
AVERAGE FLOW VELOCITY 571
!
Note!
The measured variables for the software options (concentration measurement, viscosity, batching, adv. diagnosis) are only
available if the appropriate additional software is installed in the device. If the measured variable is selected even if the
additional software is not installed, the value "0" is transmitted to the PROFIBUS master (Class 1) for the measured
variable.