d.
Provide printer spooling.
2.4.2
Applications Software
2.4.2.1
Operator Commands
The operator's commands shall provide the means for entry of monitoring and
control commands, and for retrieval of system information. Processing of
operator commands shall commence within 1 second of entry, with some form
of acknowledgment provided at that time. The operator's commands shall
perform tasks including:
a.
Request help with the system operation.
b.
Acknowledge alarms.
c.
Place zone in access.
d.
Place zone in secure.
e.
Test the system.
f.
Change operator.
2.4.2.2
Command Input
Operator's commands shall be full English language words and acronyms
selected to allow operators to use the system without extensive training or
data processing backgrounds. The system shall prompt the operator in
English word, phrase, or acronym. Commands shall be available in an
abbreviated mode, in addition to the full English language (words and
acronyms) commands, allowing an experienced operator to disregard portions,
or all, of the prompt-response requirements.
2.4.2.3
Command Input Errors
The system shall supervise operator inputs to ensure they are correct for
proper execution. Operator input assistance shall be provided whenever a
command cannot be executed because of operator input errors. The system
shall explain to the operator, in English words and phrases, why the
command cannot be executed. The error responses requiring an operator to
look up a code in a manual or other document are not acceptable.
Conditions for which operator error assist messages shall be generated
include:
a.
The command used is incorrect or incomplete.
b.
The operator is restricted from using that command.
c.
The command addresses a point which is disabled or out of service.
d.
The command addresses a point which does not exist.
e.
The command would violate constraints.
2.4.2.4
Enhancements
The system shall implement the following enhancements by use of special
function keys, touch screen, or mouse, in addition to all other command
SECTION 13721A
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