Siemens EH.75M.11. Especificaciones descargar pdf (Pagina 41)

T400 Controller Facilities Manual

667/EB/20200/000 Page 3-12 Issue 9

(ii) The conditional phase is programmed as an Appearance Type 2 and

conditioning timers are used as window timers to inhibit the appearance

of the phase. The conditioning timers are introduced and deleted by the

master time clock at the same time as the alternative maximum green

periods.

The timing range of the window period is 0 to 255 seconds in 1 second steps. The

timers are individual to stages and Figure 21.5 illustrates the allocation point.

The programmed value of the window timer may be changed via the handset using the

PWN command.

With Appearance Types 1, 2 and 3, the intergreen periods following the stage

termination may be affected by the appearance or non-appearance of the phases.

The condition of appearance of phases which are deleted by the master time clock will

only be effective during the period of non-deletion. (See section 11).

3.7.5 Window Timers Parallel Stage Streaming Facilities

(See also section 3.7.4)

Provision has been made within the software to provide 4 separate window timers, one

for each stream. This is necessary because up to 4 stages may be running

simultaneously, each demanding a different window time. Each window timer will run

the window time related to the stage within its associated stream. This is associated

with type 3 phase.

3.8 FIXED PHASES

A fixed phase is a phase (real or dummy) that has a condition of appearance Type 0

and is not deleted by timeswitch at any time.

(a) At least one fixed phase must be allocated to each stage (with the exception of

the manual all-red facility).

(b) On stage changes at least one fixed phase must gain ROW.

3.9 NON-FIXED PHASES

A non-fixed phase is a phase (real or dummy) that has a condition of appearance Type

1, 2 or 3, whether it is deleted at any time or not, or a phase that has a condition of

appearance Type 0 and is deleted at some time.

During Manual Mode the appearance of a non-fixed phase during its associated

stage(s) may be configured to:

a) never appear

b) always appear (subject to any delete phase conditions)

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Siemens EH.75M.11. Especificaciones Pagina 41