Vega VEGACOM 557 Profibus FMS Bedienungsanleitung PDF herunterladen (Seite 31)

VEGACOM 557 Profibus FMS 31

Setup

FB249: SYNCHRONOUS component

By calling up this component, the AG-CP interface is initialised. Here the max. block size is

stated, which can be exchanged between AG and CP when calling up a functional compo-

nent. In this case, the block size must be 5 (BLGR=5: 256 Byte block size).

FB249 must be called up in the organisation components OB21 and OB22.

FB249: SYNCHRONOUS

Parameter Format Description Example

SSNR KY Interface number KY 0,0

BLGR KY Block size KY 0,5

PAFE MB Parameter setting error MB 255

4.5 S5 program for reading in measured values

To facilitate reading in of measured values via VEGACOM 557 PROFIBUS FMS, you will find a

S5 program (file: MESSW@ST.S5D) on the included diskette. It consists of three functional

components (FB210-212) and a data component DB240 which should be taken over in your

S5 application.

In this way, it is possible to read in up to 156 measured values via VEGACOM 557 PROFIBUS

FMS. Since, depending on the application, it is not necessary to read in all measured values,

they are divided into 16 measured value blocks with 16 measured values each. The supplied

functional components support reading in of all measured values, individual blocks or indi-

vidual measured values.

Note:

In these functional components the interface number 0 and order number 1 are used. In your

application other values might be necessary. These values relate to adjusted values in the CP

connection planning (see FMS planning) and must be adapted, if necessary. In addition,

marker byte 0 and 255, as well as marker byte 2, are used by the program.

Functional components:

FB 210: R-MW-ALL Read in all 256 measured values (16 measured value

blocks)

FB 211: R-MW-BLK Read in one measured value block (16 measured

values)

FB 212: R-MW Read in individual measured value

Data components:

DB240: Basic settings, order blocks for CP5431

DBxxx-yyy: Data components for measured values, one DB per measured value

block

Standard setting: xxx = 220; yyy = xxx + 16 = 235

Setting of xxx in DB240 in DW0

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 55 56

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Vega VEGACOM 557 Profibus FMS Bedienungsanleitung Seite 31