Siemens EH.75M.11. Especificaciones descargar pdf (Pagina 109)

T400 Controller Facilities Manual

667/EB/20200/000 Page 9-49 Issue 9

it would be outputting and how many seconds have elapsed within this group if this

plan had been in continuous operation since 2.00 a.m. Having done these calculations

(i.e. current group has been determined and the number of seconds remaining in

current group have been calculated) the plan change can occur.

9.9.8(d)

1) Due to ‘CCP’ Handset Command

Similar actions occur when the operator decides to restore cableless linking

operation to real time clock via ‘CCP’ handset command.

In the normal CLF system, the time switch table is analysed to see what plan

should be outputting. A calculation is done to see what group within this plan

should be operating and how many seconds have elapsed within this group, has

the plan been continuously operating since, the start time specified for this plan,

in the time switch table. Having done these calculations, (i.e. current plan,

current group and seconds remaining in current group) the plan change can

occur.

The Alternative CLF system operates like the normal CLF system but in the

Alternative CLF system, having calculated what the current plan should be, the

current group is calculated as the group that should be outputting had this plan

been in continuous operation since 2.00 a.m. that morning. (Thus 2.00 a.m. is

used as the plan start time rather than the start time specified in the time switch

table).

2) Due to Real Time Clock Sync (Refer to 9.3.3(k))

Actions as for (1) above.

3) Due to Real Time Clock Load (Refer to 9.3.3(j))

Actions as for (1) above.

4) Due to Handset Clock Load (CKL = 1)

Actions as for (1) above.

9.9.8(e) Method of Plan Introduction

Certain contracts require that, when using the alternative method of Plan Introduction

mentioned above, the controller must synchronise with the Plan quickly.

To achieve this, the following constraints are placed on the CLF facility:

1. The Stage movement restraints table used by CLF should not have purely

prohibited moves or ignore moves configured. They should either be allowed

moves or if this is not acceptable for safety reasons, then alternative moves

1 2 ... 104 105 106 107 108 109 110 111 112 113 114 ... 307 308

Sin comentarios

Siemens EH.75M.11. Especificaciones Pagina 109