Siemens EH.75M.11. Spezifikationen PDF herunterladen (Seite 74)

T400 Controller Facilities Manual

667/EB/20200/000 Page 9-14 Issue 9

Figure 21.15 indicates where to request the conditions required. In the example shown,

‘RR’ is returned when Manual mode is selected. Tying in with the intersection in

section 21 and Figure 21.8, Manual mode is a lower priority than UTC mode. The

‘RR’ bit is used to request the computer to release control so that the controller may

be operated manually. When NORMAL is selected on the mode buttons ‘RR’ will stop

being sent and the computer will automatically regain control.

9.3.4(j) Controller Fault (CF)

A ‘CF’ bit may be returned to indicate any of the following conditions:

(i) No lamp power

(ii) An entry in the controller fault log

(iii) Detector Fault monitor timed out

Figure 21.15 indicates where to request the conditions required. In the example shown

‘CF’ is returned when there is a controller fault, i.e. an entry in the controller fault log.

9.3.4(k) Lamps Off (LE)

An ‘LE’ reply bit may be returned to indicate that an ‘LO’ control bit to introduce

Part-time mode has been actioned.

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