Endress+Hauser Proline Promass 83 - Selection of Units; Status of the Output Value out

5 Analog Input function block Device Functions Proline Promass 83 FOUNDATION Fieldbus
184 Endress+Hauser
5.2.4 Selection of units
A change in the unit for a process variable is defined in the relevant Analog Input function block, in
the parameter group XD_SCALE via the element UNIT.
If an unsuitable unit is selected, the function block changes to the OOS mode (out of service).
!
Note!
• If the "Direct" type of linearization was selected via the L_TYPE parameter, the setting of the
XD_SCALE and OUT_SCALE parameter groups must be identical; otherwise, the function block
remains in the OOS operating mode and the "BLOCK CONFIG ERROR" block error is displayed
in the BLOCK_ERROR parameter.
• The system units selected in the Transducer Blocks in question do not have any effect on the
setting of the system units in the Analog Input function block. The units are specified
independently of one another and must be configured separately. The unit selected in the
Transducer Blocks is only used for the local display, EPD adjustment, low flow cut off and for
simulation.
5.2.5 Status of the output value OUT
The status of the parameter group OUT communicates to the subsequent function blocks the status
of the Analog Input function block and the validity of the output value OUT. The following status
values can be displayed:
• GOOD_NON_CASCADE
The output value OUT is valid and can be used for further processing.
•UNCERTAIN
The output value OUT can only be used for further processing to a limited extent. The status tells
the downstream function blocks that a "notice message" is present in the device, e.g. arising from
active positive zero return or simulation.
•BAD
The output value OUT is invalid. The following causes are possible:
– The Analog Input function block is in the OOS operating mode.
– The Resource Block is in operating mode OOS.
– The "Flow" or "Totalizer" Transducer Block is in the OOS operating mode. The Analog Input
function block can only process the input value of the Transducer Block in question if the
operating mode is set to AUTO.
– A "fault message" is present in the device arising from a critical device error, e.g. an electronics
module defect.
!
Note!
• The status of the device (block error) is displayed by means of the BLOCK_ERR parameter.
• Detailed information on the current device status is displayed via the "Diagnosis" Transducer
Block in the parameter "Diag. - Act.Sys.Condition". A list of all the error messages, including
remedial measures, can be found in the Operating Instructions for Proline Promass 83
FOUNDATION Fieldbus (BA065D).