model 2704 controller installation and operation handbook - Soliton
model 2704 controller installation and operation handbook - Soliton
model 2704 controller installation and operation handbook - Soliton
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Totaliser, Timer. Clock, Counter Operation<br />
<strong>2704</strong> Controller<br />
12. Chapter 12 Totaliser, Timer, Clock, Counter<br />
Operation<br />
12.1. WHAT ARE TIMER BLOCKS?<br />
Timer Blocks allow the <strong>controller</strong> to use time/date information as part of the control process.<br />
They can be triggered by an event <strong>and</strong> used to initiate an action. For example, a programmer<br />
can be set to RUN at a particular day <strong>and</strong> time or an action delayed as a result of a digital<br />
input signal. The Timer Blocks page is only available if Timer Blocks has been enabled in<br />
configuration level. This is described in the Engineering H<strong>and</strong>book, Part No. HA026933.<br />
The Timer Blocks fitted in the <strong>2704</strong> <strong>controller</strong> are:<br />
Four timer blocks<br />
Clock<br />
Two alarm (clock)<br />
blocks<br />
Four totaliser blocks<br />
Timer blocks can have four modes of <strong>operation</strong> which are<br />
explained in Section 12.2. The timer type will have been set in<br />
Configuration level. The timer will be activated by an event. The<br />
event will also have been defined in Configuration mode or it<br />
may be triggered by a parameter in the list. Timing continues for<br />
a set time period. This output can be ‘wired’ in configuration<br />
mode to operate an event.<br />
Configuration of Timer function blocks is described in<br />
Engineering H<strong>and</strong>book HA026933<br />
This is a real time clock which can be used to operate other time<br />
based functions.<br />
Alarms can be switched on or off at a particular day or time <strong>and</strong><br />
provide a digital output. This output can be wired in<br />
configuration mode to operate an event.<br />
Configuration of Timer Alarm function blocks is described in<br />
Engineering H<strong>and</strong>book HA026933<br />
Totaliser blocks can also be ‘wired’, in Configuration level, to<br />
any parameter. They are used to provide a running total of a<br />
parameter <strong>and</strong> give an output when a pre-set total is reached. An<br />
example might be to totalise the flow through a pipe. The output<br />
can also be ‘wired’ in Configuration level to operate an event<br />
such as a relay.<br />
Configuration of Totaliser function blocks is described in<br />
Engineering H<strong>and</strong>book HA026933<br />
12-2 Installation <strong>and</strong> Operation H<strong>and</strong>book. Part No HA026502 Issue 1.0 Apr-00
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