GENERAL NOTES
SUMMARY OF XSF FLAGS
XSF1 - Allows auto introduction of P1 in AØ.
XSF2 - Allows auto introduction of P2 in AØ.
XSF7 - Select special maximum for SG7 in BØ via Special Purpose Timesetting No. 9.
XSF8 - Select special maximum for SG5 & SG8 in BØ via Special Purpose Timesetting No. 10.
GENERAL OPERATION
REVn. – First scan after start-up demands CØ.
If in BØ, place a demand for CØ.
If in CØ, clear demand for BØ.
Substitute CØ yellow for BØ yellow if transitioning from B2Ø -> AØ or B3Ø -> AØ.
Late start SG5 in BØ when transiting for AØ -> BØ.
SIGNAL GROUP OPERATION
SIGNAL GROUP 5
SG5 is controlled by a Special Movement Timer No. 1 within BØ. BØ All Red Timesetting is substituted for Special Movement Timesetting No. 1.
SIGNAL GROUP 7
SG7 is controlled by a Special Movement Timer No. 2 within BØ. BØ Special All Red Timesetting is substituted for Special Movement Timesetting No. 2.
XSF7 is used to set the maximum time for SG7 in BØ. The maximum time is accessible in Special Purpose Timesetting No. 9. When XSF7 is set, SG7 may run for a green period equal to the BØ minimum green plus the time stored in Special Purpose Timesetting No. 9.
SIGNAL GROUP 7 – Partially Controlled Right Turn (Red Arrow Drop Off Operation)
SG7 operates Green/Yellow/Red in BØ and can be switched to blank in CØ.
If there is no demand for P4 in CØ, SG7 is switched to blank at the end of CØ late start period.
When P4 runs in CØ, SG7 is held red in CØ for the duration of Timer 1 (which starts timing at the start of P4 walk time using Special Purpose Timer No. 11). When Timer 1 expires, SG7 red is switched to blank in CØ if it is later than CØ late start period. 
CØ ECO is used to guarantee SG7 minimum blank period in CØ. Timer 2 starts timing from the beginning of SG7 blank period using Special Purpose Timer No. 12. Expire CØ ECO from this approach when Timer 2 expires.
SG7 goes red at the start of SG3 red in CØ and is held red in AØ & B3Ø.
SIGNAL GROUP 8
SG8 is controlled by a Special Movement Timer No. 3 within BØ. BØ All Red Timesetting is substituted for Special Movement Timesetting No. 3.
XSF8 is used to set the maximum time for SG5 & SG8 in BØ. The maximum time is accessible in Special Purpose Timesetting No. 10. When XSF8 is set, SG5 & SG8 may run for a green period equal to the BØ minimum green plus the time stored in Special Purpose Timesetting No. 10.
SIGNAL GROUP 8 – Partially Controlled Right Turn (Red Arrow Drop Off Operation)
SG8 operates Green/Yellow/Red in BØ and can be switched to blank in CØ.
If there is no demand for P3 in CØ, SG8 is switched to blank at the end of CØ late start period.
When P3 runs in CØ, SG8 is held red in CØ for the duration of Timer 3 (which starts timing at the start of P4 walk time using Special Purpose Timer No. 13). When Timer 3 expires, SG8 red is switched to blank in CØ if it is later than CØ late start period. 
CØ ECO is used to guarantee SG8 minimum blank period in CØ. Timer 4 starts timing from the beginning of SG8 blank period using Special Purpose Timer No. 14. Expire CØ ECO from this when Timer 4 expires. 
SG8 goes red at the start of SG4 red in CØ and is held red in AØ & B2Ø.
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 flag is set (all modes).
P1 calls away to CØ if 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 XSF2 flag is set (all modes).
P2 calls away to CØ if controller is resting in AØ.
Pedestrian 3
P3 calls CØ.
P3 can introduce at any time in B2Ø & at the start of CØ and can overlap B2Ø→CØ.
Pedestrian 4
P4 calls CØ.
P4 can introduce at any time in B3Ø & at the start of CØ and can overlap B3Ø→CØ.
DETECTOR OPERATION
Detector 4
Detector 4 places locking call for CØ and non-locking call for BØ when its presence timer expires.
Detector 6
Detector 6 places locking call for CØ and non-locking call for BØ when its presence timer expires.
OPERATION OF ILLUMINATED SIGNS
Wait State 7 (WS7) & Special Output 2 (SO2) drive LED ‘Give Way To Pedestrians’ sign during P4 Walk & Clearance after SG7 red has dropped off in CØ.
Wait State 8 (WS8) & Special Output 1 (SO1) drive LED ‘Give Way To Pedestrians’ sign during P3 Walk & Clearance after SG8 red has dropped off in CØ.