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Fairbanks X SERIES PR 5410 Process Indicator User Manual

Page 133

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Section 7: Fieldbus Interface

10/08 133

51207 Revision 1

Control Byte
Some instrument functions can be executed by setting bits in the input area directly.

Action of the master

Response of PR 5410

Setting bits in the control byte

The operation is handled

Resetting bits in the control byte



Waiting for the Result of the Action
When an action taking a longer time was started, the end of execution can be waited for after
starting (see Chapter 0 and Chapter 0).

Action of the master

Response of PR 5410

Setting bits as in Chapters 0 or 0

Acknowledging the set bit as in Chapter 0

Setting the

CmdBusy bit

The operation is handled

In the event of an error: Setting the

CmdError

bit and the

LastError

byte

Resetting the CmdBusy bit

Waiting, until

CmdBusy

was reset

Checking the

CmdError bit

When set, reading

LastError

(see Chapter

0)


This is applicable to taring, zero setting etc. over the fieldbus.