Siemens KS7 Series Spezifikationen PDF herunterladen (Seite 185)

Communications Mode CP 523

STL FB 126 Explanation

:C DB 3 Open target data block.

M001 :A F 101.1 Message frame in DB?

:JC =M001 If yes, then Block End.

:LW =BADR Load and store

:T FW 222 module start address.

:L KH A080 Load Receive request

:DO FW 222

:T PW 0

and transfer to CP.

:L KH 0080 Message frame

:DO FW 222

:L PW 0

in Receive mailbox?

:AW

:><F

If no,

:JC =M001 then Block End.

:S F 101.1 Set message frame flag.

:LW =BADR Load module address,

:ADD KF +6 set byte 6 address

:T FW 222 and store.

:LW =ENZE Load end-of-text character

:T FW 224 and store.

:L KH 0000 Preset data word pointer.

:T FW 232

:L KH 0003

Preset auxiliary data word pointer.

:T FW 234

M003 :

:LW =BADR

Load module address

:T FW 220 and store.

:L KH 0000 Request next message block

:DO FW 220 by writing byte 0.

:T PW 0

M004 :L FW 224

Is the next data byte equal to

:DO FW 220 the end-of-text character?

:L PW 0

:!=F

If yes,

:S F 101.2 set End flag.

FB 126 LEN=85

NETWORK 1 0000

NAME :RECEIVE4

DES :BADR I/Q/D/B/T/C: D KM/KH/KY/KC/KF/KT/KZ/KG: KF

DES :ENZE I/Q/D/B/T/C: D KM/KH/KY/KC/KF/KT/KZ/KG: KH

7-80

EWA 4NEB 811 6044-02a

1 2 ... 180 181 182 183 184 185 186 187 188 189 190 ... 256 257

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