DL06 Micro PLC User Manual, 3rd Edition, Rev. E
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Chapter 5: Standard RLL Instructions
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HILOAL Example
In the following example, the HILOAL instruction is used to monitor a BCD value that is in
V2000. If the value in V2000 meets/exceeds the high limit of K900, C101 will turn on. If the
value continues to increase to meet/exceed the high-high limit, C100 will turn on. Both bits
would be on in this case. The high and high-high limits and alarms can be set to the same value
if one “high” limit or alarm is desired to be used.
If the value in V2000 meets or falls below the low limit of K200, C102 will turn on. If the value
continues to decrease to meet or fall below the low-low limit of K100, C103 will turn on. Both
bits would be on in this case. The low and low-low limits and alarms can be set to the same
value if one “low” limit or alarm is desired to be used.
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