01.91 5 Configuring
5.19 FB 199 First in first out (milling version)
5.19 FB 199 FIFO
First in first out (milling version)
for SINUMERIK 880/880 GA2 and package 2 only
Description
With the "FIFO" FB, data that are acquired in quick succession can be stored in a data buffer.
Afterwards, these data can be read as required. A maximum of 255 data lines can be stored
by means of this block. The DBs for the buffer entries are generated.
DW 0
DW 1
DW n
DBSP DBSP+1 DBSP+2
Write/read
pointer
Number of entries/
status word
EW1/QW1 EW2/QW2 EW3/QW3
:
:
:
:
:
:
:
:
:
EW1/QW1 EW2/QW2 EW3/QW3
Block data
Lib. No. : E88530-B-5599-A
FBs to be loaded : FB 199
DBs to be loaded : None
Type of FB call : Unconditional
DBs to be input : None
Error messages : None
Block call FB 199
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FB FIFO
$I, W EW 1 VOLL Q, BI
$I, W EW 2 LEER Q, BI
$I, W EW 3 AW 1 Q, W
$I, BY ANEI AW 2 Q, W
$I, BY DBSP AW 3 Q, W
I, BI EINL
I, BI AUSL
I, BI LOES
F 2.1 GST
Signal descriptions
EW 1... Input channels
EW 3 The input channels contain the errors that are to be buffered (three words in parallel).
© Siemens AG 1991 All Rights Reserved 6FC5 197-0AA40-1BP1 5–83
SINUMERIK 840/880 (PJ)
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