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Profibus-DP Protocol 33

jins85e1 4.fm Interface Description(1101)

5 Profibus-DP Protocol

5.1 Preface

In order to use Profibus-DP with T-Guard, you must have ordered a T-Guard in the

Profibus version (Cat. No. 540-002). It is not possible to add the Profibus option to

Cat. No. 540-001.

When setting up the Profibus communication you need to use the GSD file provided

by INFICON.

5.2 Process Data Mapping for Cyclic Data Transfer

5.2.1 Read Process Data (PLC-> Leak Detector)

This data is sent periodically from the programmable logic controller to the leak

detector:

Notice The Profibus-DP protocol is subject to change.

If you are using this protocol, please ask INFICON for an update.

Byte Bit Name

Meaning

Similar to PLC

Input

Similar to RS232

ASCII cmd.

not used

2 CLEAR

Transition 0->1:Clears errors and

warnings CLEAR *CLS

3 not used

4CAL

Transition 0->1: Start calibration CAL *CAL:START

PROOF Transition 0->1: Start proof PROOF

STOP Transition 0->1: Stop STOP *STOP

START Transition 0->1: Start START *START

0 PURGE_STOP

Transition 0->1 = Stop purging the

measurement line *PURGE:STOP

1 PURGE_START

Transition 0->1 = Start purging the

measurement line PURGE *PURGE:START

2 not used

3 not used

4 STANDBY

Transition 0->1: Switch to

stand-by STANDBY *STANDBY

5 GROSS/FINE

Switch between GROSS and

FINE (in Cont. Mode only) GROSS/FINE *GROSS ON

READY

Transition 0->1: Wake up leak

detector from stand-by mode READY *STANDBY:STOP

7 not used

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 39 40

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