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Protege System Controller Reference Manual

Protege System Controller Reference Manual

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Analog Channel 1 Update Time<br />

When the analog input expander is used the channel will generate analog information that is stored in the<br />

variable associated with the analog expander. The data can be programmed to be sent in various incremental<br />

values. As many elements that are monitored by sensors operate slowly we recommend using the longest times<br />

possible. This also reduces the risk of disturbances due to interference as the input is averaged over the period<br />

of time being sampled.<br />

AE001 Ch 1 Time<br />

30 Secs<br />

Use the [1] and [3] keys to scroll the channel time settings. For more information about the list control data entry<br />

refer to the section List Control Data Entry (see page 344).<br />

Analog Channel<br />

1 Differentiate On Send Value<br />

The value that is configured is constantly monitored against the last value that is sent to the system controller<br />

and if a change has occurred greater than the amount programmed and differentiate on send option is enabled<br />

the channel will send an update and start the comparison process again.<br />

The value that is programmed is an offset of the raw input value to the analog expansion module device. The<br />

last sent value is retained and any input is sampled and averaged before being compared to the differentiate<br />

value.<br />

AE001 Ch 1 diff<br />

value: 000<br />

To enter a value (0-255), use the keypad as explained in section Entering Decimal Numbers (see page 341) and<br />

press [ENTER].<br />

Programming Analog Channel 2, 3 and 4<br />

The programming screens for channels 2, 3 and 4 are identical to channel one and you will be prompted with<br />

each channel screen as you press the [ENTER] key. Each channel operates independently of each other.<br />

PRT-CTRL-SE <strong>Protege</strong> <strong>System</strong> <strong>Controller</strong> <strong>Reference</strong> <strong>Manual</strong> | PRT-CTRL-SE 89

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