GENERAL NOTES
SUMMARY OF XSF FLAGS
XSF1 - Allows the late introduction of P1 in AØ. (Master)
XSF2 - Allows the late introduction of P2 in AØ. (Master)
SUMMARY OF MSS FLAGS
MSS2 - Ambulance station call (Detector 19) used to send site isolated.
GENERAL OPERATION
1. If in AØ clear demands for CØ.
2. Expire BØ ECO if going BØ®CØ.
SIGNAL GROUP OPERATION
Signal Group 1
1. SG1 green overlaps AØ«DØ.
Signal Group 3
1. SG3 closes down at the start of BØ ECO.
Signal Group 4
1. SG4 green overlaps BØ®CØ.
Signal Group 5
1. SG5 closes down at the start of BØ ECO.
Signal Group 6
1. SG6 green overlaps BØ®CØ.
2. SG6 green overlaps CØ®DØ.
3. Late start SG6 in DØ if going AØ®DØ or BØ®DØ.
Signal Group 8
1. SG8 green overlaps CØ®DØ.
2. Late start SG8 in DØ if going AØ®DØ or BØ®DØ.
PEDESTRIAN GROUP OPERATION
Pedestrian 1
P1 calls AØ.
P1 can introduce at the start of AØ.
In Master, P1 can introduce at anytime in AØ while XSF1 is set.
Pedestrian 2
P2 calls AØ.
P2 can introduce at the start of AØ.
In Master, P2 can introduce at anytime in AØ while XSF2 is set.
Pedestrian 3
P3 calls BØ.
P3 can introduce at the start of BØ.
Pedestrian 4
P4 calls BØ.
P4 can introduce at the start of BØ.
DETECTOR OPERATION
GENERAL
Clear vehicle demands during associated phase green and yellow.
Detector 14
Clear demands for BØ from detector 14 during SG4 green and yellow.
Detector 15
Detector 15 places locking calls for BØ and non locking calls for CØ when its presence timer expires. 
Clear demands for BØ from detector 15 during SG4 green and yellow.
Detector 16
Clear demands for BØ from detector 16 during SG6 green and yellow.
Detector 17
Detector 17 places locking calls for BØ and non locking calls for CØ when its presence timer expires. 
Clear demands for BØ from detector 17 during SG6 green and yellow.
OPERATION OF AMBULANCE EXIT PHASE
To assist Ambulance vehicles out of the Warrnambool Ambulance Service Station (Ambulance) respectively, through the intersection, an exit phase, DØ has been provided.  The exit from the Ambulance Station is controlled by two (2) push buttons, detector 19 (CALL) and detector 20 (CANCEL), located in the Ambulance Station. Their functions are as detailed below.
CALL FUNCTION 
Detector 19 for Ambulance Station
1. When Push Button 1 (Detector 19) in the Ambulance Station is activated, it turns on P8 Wait State 
    Output and starts Timer 2 (refer Special Purpose Timesetting No. 13).
2. The expiry of Timer 2 sets MSS2 flag, forces the controller to isolated operation (via VR 30), calls 
    DØ, clears demands for AØ, BØ and CØ, cancels extension for the running phase and terminates 
    the running phase without violating minimum green and pedestrian times.
3. If the controller is changing phase, i.e., in the intergreen of a phase, when the CALL is received, 
    do NOT service the demanded pedestrian(s) in the phase that is about to run.
4. If P1, P2, P3 or P4 is in walk when the CALL is received, then select Special Purpose Timesetting     
    No. 12 for the alternate pedestrian walk time.
5. DØ automatically extends out to maximum unless Push Button 2 (Detector 20) is activated.
    Note: Gap, headway and waste timesettings are not used in DØ.
6. If a second call is placed during DØ extension, reset the maximum extension timer for DØ.
7. A miniature display (yellow and green LED’s) is provided inside the Ambulance Station. This display
    is supplied at ELV (32V) via interface relays with the controller.
    Refer to “Call Record Facility Ambulance Station” below for details.
8. A two aspect (Red/White E) display is provided inside the Ambulance Station garage. This display is
    driven by SG14. SG14 red is switched on by the CALL function and is turned off at the start of DØ.
    SG14 green drives the white E. SG14 is green during DØ green.
CANCEL FUNCTION
Detector 20 for Ambulance Station
1. When Push Button 2 (Detector 20) in the Ambulance Station is activated, it starts Timer 3 (refer 
    Special Purpose Timesetting No. 14) that when expired, cancels the extension for DØ called by 
    Push Button 1 (Detector 19) only.
2. DØ can not terminate until the end of DØ minimum green.
3. AØ always follows DØ.
3. Clear MSS2 flag at the commencement of DØ yellow and resume normal intersection operation.
Note: The MSS flags can be monitored in PSC2003 by keying in A.E00DA into the controller’s KDU.
CALL RECORD FACILITY AMBULANCE STATION
Relay Output 1 is activated by P8 Wait State (ATSC4/ PSC2000/ QTC) or by Special Output 1 (Eclipse). Both P8 Wait State (P8WS) and Special Output 1 (SO1) are set in the controller personality.
Relay Output 1 is set by the CALL function to enable the Ped 8 Wait State (P8WS) /Special Output 1 (SO1) facility in the controller to be used, to drive a display in the Ambulance Station.  
P8WS/SO1 is cleared at the start of DØ. SG14 red is switched on at the same time as Relay Output 1.
P8WS can be monitored by keying in A.E03BD (PSC2000) or 7 (Diag) > 1 (Mem) > 3BD (Alpha 16/ ATSC4/ QTC) into the controller, or in SCATS Access, Show > Controller > Memory - Page 3, Offset BD (Hex).
SO1 can be monitored by keying in 7 (Diag) > 1 (Mem) > 37A (Eclipse) into the controller, or in SCATS Access, Show > Controller > Memory - Page 3, Offset 7A (Hex).
ALARM STATUS
1. Detectors 19 and 20 do not alarm in the OFF state.
2. If detector 19 is ON continuously, DØ will not be recalled until the detector changes state from 
    OFF to ON.
3. If detector 20 is ON continuously, the CANCEL function will operate NORMALLY, i.e., DØ (called by 
    detector 19) will run for the minimum green period only.
Note: The failure of detectors 19 and 20 in the ON state will flag a detector alarm for monitoring purposes.