Toro Micro-Master Series User Manual page 93

Micro-Master Touch User Guide
Rule Parameters
Rule Name
Each rule can be assigned a name. Names are limited to 20 characters. Naming a rule clarifies the
reporting of rules.
Rule Enabled
Rules can be enabled or disabled.
Rule Details
Rule setting follows a simple process.
If an IF rule option is left blank it is ignored. The IS option can be True or False. The logic box must
be either AND or OR. Mixing of True and False statements is allowed. Once AND or OR is selected
it applies to all statements in the rule. i.e. Condition 1 AND Condition 2 AND Condition 3 AND
Condition 4 ...or conversely Condition 1 OR Condition 2 OR Condition 3 OR Condition 4.
If "Something" is True AND the next "Something" is TRUE.........Then Do(Start,Stop Hold,etc) a
Target(Program, Station, etc) is a simple example.
Also remember that a Rule can also be used to trigger another rule. This allows multiple rules to be
used to monitor complex requirements.
When creating rules always check if once a rule is in action, that the action will stop at some point in
time. If not, create a rule to force a stop when a set limit is reached.
Case 1 example:
A dam and tank both have float sensors that close when the dam or tank is empty. Program 1 is a
program that irrigates from the tank. Program 2 runs a transfer program to move water from the dam
to the tank. When the tank is empty we want to hold Program 1, while the tank transfer program
runs.
Therefore a rule that would encompass this scenario would be, "If Tank IS True (Empty) AND Dam IS
False (not Empty), START Program 2 (Tank Transfer)". The Hold Sensor input for Program 1
(Irrigation) can be set to Program 2.
This rule would work in the following way. If the tank becomes empty, and the dam is not empty, the
rule would become active and start the tank transfer program. As program 2 is now active, and it is
the hold sensor input for the irrigation program, the irrigation program will hold for the duration of the
tank transfer program. When the tank transfer program completes, it will become idle, and the
irrigation program will resume operation.
Case Example 2, Nested Rules.
Three sensors are connected to inputs on the front panel from weather monitoring instruments.
Sensor 1 closes when temperature reaches a set point, Sensor 2 closes when the wind reaches a
certain velocity, and Sensor 3 closes when the soil moisture reaches a critically low threshold.
We want to set up a set of rules to irrigate a heat program if the temperature is high, but it is not too
windy. However, if the soil moisture is critically low, we want to irrigate irrespective of the
temperature or wind conditions.
In this scenario, Rule 1 would be "If Sensor 1 IS True AND Sensor 2 IS False".
Rule 2 would be "If Rule 1 IS True OR Sensor 3 IS True, START Heat Program"
© 2014 Toro Australia Pty Ltd 85 Ver 1.2, June 2014