Lenze ETC Motion Control Instrukcja Użytkownika Pobierz pdf (Strona 393)

100

101

PLC programming

Library

Memory access functions

8.8

8.8.4

393

EDSTCXN EN 2.0

8.8.4 Memory access functions

8.8.4.1 DEFDATATYPES

FUNCTION DEFDATATYPES: BYTE

VAR_INPUT

iRange : INT;

sDescriptor : STRING(255);

END_VAR

The function defines the data types in DB2 and thereby the required byte

swapping during the data transfer between NCR and MMI.

Currently, two ranges are being differentiated:

Range 1 of word 0 ... 127 contains data from the PLC to MMI, range 2 of word

128 ... 191 contains data from MMI to the PLC. A descriptor string is used to

define the data types. The descriptor string has the following format:

<number><type><number><type>...

Number is a decimal number and defines then data quantity for the

following type.

Type is a lower−case letter describing the size of the data type as follows:

Type Codesys data type Size

B BYTE 8 Bit

W BOOL, WORD, INT 16 Bit

D DWORD, DINT, REAL 32 Bit

l LREAL 64 Bit

The function returns a value of 1 if the function has been completed

successfully, otherwise a value of 0.

Declaration

Description

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ama 11 Jan 2025 | 19:35:39

rasha

Lenze ETC Motion Control Instrukcja Użytkownika Strona 393

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