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CP 523 Using the ”SEND” and ”Receive” Function Blocks

8.1.2 Setting ”SEND” FB 200 Parameters

If you want to send a message frame of specific size, specify the length of the message frame to be

sent (in words) in the QLAE parameter. The "ENDZ" parameter is not significant here. In 3964(R)

mode, the message frame size must be specified.

If you want to send a message frame with end-of-text characters (variable length), specify "zero"

in the QLAE parameter and two end-of-text characters in the "ENDZ" parameter. Both end-of-text

characters must be in the same data word.

Example: End-of-text character 0D 0D

valid: DW n KH: 44 44 invalid: DW n KH: 44 0D

DW n+1 KH: 0D 0D DW n+1 KH: 0D 00

Table 8-2. Setting the "ENDZ" and "QLAE" Parameters

ENDZ

(End-of-text char.)

QLAE

(Frame length)

Transmission mode

>< 0

Message frame of specific length

NOT PERMISSIBLE

Message frame with end-of-text characters

EWA 4NEB 811 6044-02a

8-3

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Siemens KS7 Series Specifiche Pagina 193