GENERAL NOTES
SUMMARY OF XSF FLAGS
XSF1 Auto Introduction of P1 & P2
XSF2 Auto Introduction of P3 & P4
SUMMARY OF MSS FLAGS
MSS1 Set when demand is received for CØ via Detector 18.
MSS2 Set when Detector 18 is alarmed.
GENERAL OPERATION
If transition from AØ to CØ, close down both SG1 and SG2 in AØ yellow.
Use AØ Special All-Red if transition from AØ to CØ.
REVn. – first scan after start-up demands BØ.
Clear phase demands during associated green and yellow times.
PEDESTRIAN GROUP OPERATION
Pedestrian 1
P1 calls AØ.
P1 can introduce at the start of AØ.
P1 auto introduces at the start of AØ, when XSF1 is set.
P1 calls away to BØ when controller is resting in AØ.
Pedestrian 2
P2 calls AØ.
P2 can introduce at the start of AØ.
P2 auto introduces at the start of AØ, when XSF1 is set.
P2 calls away to BØ when controller is resting in AØ.
Pedestrian 3
P3 calls BØ.
P3 can introduce at the start of BØ.
P3 auto introduces at the start of BØ, when XSF2 is set.
Pedestrian 4
P4 calls BØ.
P4 can introduce at the start of BØ.
P4 auto introduces at the start of BØ, when XSF2 is set.
AMBULANCE PHASE OPERATION
1. A push button (detector 2 at site 6076) located within ambulance station is used to place a demand for CØ via detector 18.
2. When a demand for CØ is received, MSS1 flag is set. MSS1 then forces the controller to isolated operation. MSS1 will remain set for the whole operation of CØ.
3. When CØ is demanded, the controller will clear all phase demands and proceed to CØ without violating the minimum green and pedestrian times. If a pedestrian is in walk when CØ is demanded, then select Special Purpose Timesetting No 13 for the pedestrian walk time.
4. If controller is changing phases when a call is received for CØ, then do not service pedestrians in the phase which is about to run.
5. When CØ is called, it will run CØ for a minimum time as specified and can be extended a further amount as specified by vehicles passing over detector 4, 5 and 6.
6. If detector 18 is short circuited, clear demand after running CØ once and until detector 18 changes state. Set MSS2 for its duration when it is alarmed.