Siemens ST750 - Page 39

ST750 GENERAL HANDBOOK
667/HB/33750/000 Page 39 Issue 6
Figure 2 – Ped Demand Processing
PHASE
DEMAND
PROCESSING
IPX
DEMAND
AND
DEMAND
BUT NOT
KERBSIDE
KERBSIDE
AND
DEMAND AND
KERBSIDE
KERBSIDE ACTIVE
OR
OR
OR
PBNACT
(ENG 254)
KBSACT
(ENG 255)
1WTCTRL
OR
SET
PBKLAT
(ENG 256)
CLR
ROW
OR
SPECIAL
CONDITIONING
READ/WRITE
ACCESS
UNLPUF
(ENG 197)
PEDBUT
(ENG 29)
OR
ROW
IPX
NOT
PDX
NOT
WAIT /
DEMAND
INDICATOR
INPUTS
PED INPUT PROCESSING
PED DEMAND PROCESSING
PUSHBUTTON
ACTIVE
LATCHED
PUSHBUTTON
PUSHBUTTON &
KERBSIDE LATCH
SET
PBNLAT
(ENG 284)
CLR
SPECIAL CONDITIONING ‘WAIT’ CONTROL
ALL KERBSIDES
INACTIVE
PDD
OR
LATCHD
VARIOUS
FACILITIES
LATCHED PHASE DEMANDS
x4
The following lines can be used in special conditioning to add pedestrian phase demand and kerbside inputs in addition to those
provided by the firmware:
;xxPB = Pushbutton input, xxKBS = Associated Kerbside input, ‘p’ = Phase letter
xxPB_ext.xxKBS_ext=+PBNACTp ;Pushbutton and Kerbside both active
xxPB.NOT(xxKBS_ext)=+PBNLATp ;Pushbutton active while kerbside inactive
xxKBS_ext=+KBSACTp ;Kerbside extension active