Endress+Hauser Proline Promass Q 500, Руководство по эксплуатации

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Proline Promass Q 500 PROFIBUS PA System integration
Hauser 95
Input data of TOTAL
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
Measured value: floating point number (IEEE 754) Status
AO module (Analog Output)
Transmit a compensation value from the PROFIBUS master (Class 1) to the measuring
device.
A compensation value, along with the status, is cyclically transmitted from the PROFIBUS
Master (Class 1) to the measuring device via the AO module. The compensation value is
depicted in the first four bytes in the form of a floating point number as per the IEEE 754
standard. The fifth byte contains standardized status information pertaining to the
compensation value.
Three Analog Output blocks are available (slot 12 to 14).
Assigned compensation values
A compensation value is permanently assigned to the individual Analog Output blocks.
CHANNEL Function block Compensation value
306 AO 1 External pressure
1)
307 AO 2 External temperature
1)
488 AO 3 External reference density
1) The compensation values must be transmitted to the device in the SI basic unit
The selection is made via: Expert → Sensor → External compensation
Data structure
Output data of Analog Output
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
Measured value: floating point number (IEEE 754) Status
DI module (Discrete Input)
Transmit discrete input values from the measuring device to the PROFIBUS master (Class
1). Discrete input values are used by the measuring device to transmit the state of device
functions to the PROFIBUS master (Class 1).
The DI module cyclically transmits the discrete input value, along with the status, to the
PROFIBUS Master (Class 1). The discrete input value is depicted in the first byte. The
second byte contains standardized status information pertaining to the input value.
Two Discrete Input blocks are available (slot 15 to 16).