Siemens EH.75M.11. Especificaciones descargar pdf (Pagina 70)

T400 Controller Facilities Manual

667/EB/20200/000 Page 9-10 Issue 9

9.3.3(i) Take Over (TO)

A ‘TO’ bit may be programmed so that no ‘F’ bits will be effective unless ‘TO’ is

present. The facility that is available for ‘TC’, desribed in section 9.3.3(9.3.3(l)), is

used for ‘TO’ instead.

See also 9.3.4(9.3.4(n)) and 9.3.7

9.3.3(j) RTC Set to Stored Value (TS)

A ‘TS’ bit may be programmed to cause the time in the Real Time Clock to be set to

the value stored in the configuration PROM. This is similar functionally to setting the

time using CKL = 1.

The Sync signal (TS) is transmitted at the same levels as TS1 (see section

9.3.3(9.3.4(l))).

The Synch signal can set either:

a) minutes and seconds OR

b) hours, minutes and seconds OR

c) day, hours, minutes and seconds.

This will allow synching either:

a) once an hour

b) once a day

c) once a week

selected at configuration time.

9.3.3(k) RTC Synchronisation (TS1)

A ‘TS1’ bit may be programmed to cause the master time clock to be synchronised at

8, 18, 28, 38, 48 or 58 minutes past each hour. The synchronisation code is transmitted

at 0101 levels, each level of 1 second duration.

The central office computer has to be programmed to send the synchronisation code

when its system clock indicates any of the times shown below. The central office

computer must be programmed such that the final “1” bit of the synchronisation code

is sent on the 30 second boundary, i.e. start sending code at 27 seconds past with first

‘0’ bit.

Hour Minutes Seconds

Any 8 30

Any 18 30

Any 28 30

Any 38 30

Any 48 30

Any 58 30

When the controller receives the second “1” bit (at the end of the Code), it checks to

see if the real time clock is within + 29 secs. of the synch time. If it is, the controller

1 2 ... 65 66 67 68 69 70 71 72 73 74 75 ... 307 308

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Siemens EH.75M.11. Especificaciones Pagina 70