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
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
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
Register for Z-DB start address for DWs (DO FW
register, store data words in Z DB)
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