VEGA VEGAFLEX 66 (-110…+400°C) Profibus PA User Manual

Page 40

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Wrong presentation of the measured value in Simatic S5

l

Simatic S5 cannot interpret the number format IEEE of
the measured value

à Insert converting component from Siemens

?

In Simatic S7 the measured value is always presented as 0

l

Only four bytes are consistently loaded in the PLC

à Use function component SFC 14 to load 5 bytes

consistently

?

Measured value on the indicating and adjustment module
does not correspond to the value in the PLC

l

The menu item "Display - Display value" is not set to
"PA

-Out"

à Check values and correct, if necessary

?

No connection between PLC and PA network

l

Incorrect adjustment of the bus parameter and the
segment coupler-dependent baud rate

à Check data and correct, if necessary

?

Instrument does not appear during connection setup

l

Profibus DP cable pole-reversed

à Check cable and correct, if necessary

l

Incorrect termination

à Check termination at the beginning and end points of

the bus and terminate, if necessary, according to the
specification

l

Instrument not connected to the segment, double
assignment of an address

à Check and correct, if necessary

In Ex applications, the regulations for the wiring of intrinsically
safe circuits must be observed.

?

E

013

l

no measured value available

à sensor in boot phase
à Sensor does not find an echo, e.g. due to faulty

installation or wrong parameter adjustment

à Wrong sensor length entered

Fault messages via the
indicating/adjustment
module

40

VEGAFLEX

66 • Profibus PA

8 Maintenance and fault rectification

32764

-EN

-080716

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