Siemens SIMATIC S5 Manual page 98

Application Examples
FB 54
MEANING OF THE FLAGS USED:
F 105.0 FLAG BIT FOR THE FIRST APPROACH SECTION
F 105.1 FLAG BIT FOR THE SECOND APPROACH SECTION ( START BACKWARDS )
F 105.2 FLAG BIT FOR THE THIRD APPROACH SECTION ( START FORWARDS WITH
LOW VELOCITY )
F 105.7 AUXILIARY FLAG TO ALLOW THE CPU DELAY CYCLE TO RUN
I 88.3 LIMIT SWITCH END
I 88.5 PULSE OUTPUT
NAME :EPKT
0005 :A I 88.5
0006 :S Q 89.4
0007 :S Q 89.5
0008 :BEC
0009 :
000A :
000B :A F 105.0
000C :JC =M001
000D :S F 105.0
000E :S F 105.7
000F :L KH 581F
0011 :T QW 88
0012 :L KH FFFF
0014 :T QW 90
0015 :BEU
0016 :
0017 :
0018 M001 :A F 105.1
0019 :JC =M002
001A :S F 105.1
001B :S F 105.7
001C :L KH 2820
001E :T QW 88
001F :L KH 0380
0021 :T QW 90
0022 :BEU
0023 :
0024 :
6-22
LEN=61
( ILSE )
( IPQ )
IF PULSES ARE OUTPUT,
SWITCH ON "NEUTRAL" MODE
AND DO NOT PROCESS
THE FB
FIRST APPROACH SECTION: FORW.,
WITH MAXIMUM PATH
SECOND APPROACH SECTION: BACKW.
WITH SHORT PATH
IP 267
ABS
PAGE 1
( START FORWARDS )
EWA 4NEB 812 6061-02a