Endress+Hauser Proline Promass I 300 - Page 79

Proline Promass I 300 PROFINET System integration
Endress+Hauser 79
Data structure
Input data of Analog Input
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
Measured value: floating point number (IEEE 754) Status
1)
1) Status coding →  86
Application-specific Input module
Transmit compensation values from the automation system to the measuring device.
The Application-specific Input module cyclically transmits compensation values, including
the status, from the automation system to the measuring device. 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.
Assigned compensation values
The configuration is performed via: Expert → Application → Application specific
calculations → Process variables
Slot Compensation value
31 Application-specific Input module
32 Application-specific Input module
Data structure
Input data of Application-specific Input module
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
Measured value: floating point number (IEEE 754) Status
1)
1) Status coding →  86
Failsafe mode
A failsafe mode can be defined for using the compensation values.
If the status is GOOD or UNCERTAIN, the compensation values transmitted by the
automation system are used. If the status is BAD, the failsafe mode is activated for the use
of the compensation values.
Parameters are available per compensation value to define the failsafe mode: Expert
→ Application → Application specific calculations → Process variables
Fail safe type parameter
• Fail-safe value option: The value defined in the Fail safe value parameter is used.
• Fallback value option: The last valid value is used.
• Off option: Failsafe mode is disabled.
Fail safe value parameter
Use this parameter to enter the compensation value which is used if the Fail safe value
option is selected in the Fail safe type parameter.
Digital Input module
Transmit digital input values from the measuring device to the automation system.