Honeywell 5701 Operating Instructions Manual page 62

MAN0443.P65 Issue 13 Aug 04
05701-M-5001 A02279
CHAPTER 3 CONTROLS AND FACILITIES
The rack clock is located in the Engineering Card, however since the
Engineering Card has no display, a control card must be selected to
enable the time and date to be displayed. It does not matter which
control card is selected.
If the Engineering Key is fitted to the Engineering Card, the time and date
can be adjusted.
3.3.14 INHIBIT Push-button
When the INHIBIT push-button is operated, the selected control card is
placed in the inhibit mode. This prevents the operation of any configured
relay output alarm functions.
Inhibit can only be used if the Engineering Key is fitted to the Engineering
Card, however, if the Engineering Key is subsequently removed the
selected control card remains in the inhibit mode.
3.3.15 Engineering Serial Port
The Engineering Serial Port is a miniature DIN socket which provides
three functions:
a. Connection point for the Engineering Key to unlock the engineers
functions.
b. Connection point for the External Engineering Interface which allows
each control card to be configured by an external PC running the
configuration software.
c. Connection point for a serial printer which can be used to provide a
hard copy of the control card configuration data and status.
The Engineering Serial Port and its Engineering Key are shown below:
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5701 Control System