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

8.2.5 Flags in "RECEIVE" FB 201

Explanation of the flags used by "RECEIVE" FB 201:

Table 8-4. Overview of the Flags Used by "RECEIVE" FB 201

Flag Symbol Meaning

F 255.0 H-FLAG-1

Auxiliary flag for buffering the RLO at jump

F 254.7 H-FLAG-3

Auxiliary flag for STAT bit "Data available"

FY 254 H-BYTE-1

Auxiliary flag byte for buffering STAT

FW 230 ZLAE-REG

"Number of data words fetched from the CP

(= ZLAE parameter") register

FW 232 Z-DB-LAE

Auxiliary register for storing length of

destination DB

FW 234 BADR-IND

Module address index register for word-serial

reading from CP

FW 242 BADR-REG

Module address register (DO FW register for CP

access)

FY 246 H-BYTE-2

Auxiliary flag byte for processing the last

message block

FW 236 ZANF-REG

FW 238 B-AN-E ”Number of message blocks" register

FW 240 ANZ-E-W Number of words to be received

FW 244 W-LE-BL Number of words in last message block

8-28

EWA 4NEB 811 6044-02a

1 2 ... 213 214 215 216 217 218 219 220 221 222 223 ... 256 257

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Siemens KS7 Series Spezifikationen Seite 218