5 I/O Refreshing
5 - 26
NX-series Digital I/O Unit User’s Manual (W521)
Add NX Units that support input refreshing with input changed time to the CPU Unit configuration or
Slave Terminal configuration.
After you add the NX Units, set an I/O refreshing method depending on the connected CPU Unit or
Communications Coupler Unit so that these NX Units operate with input refreshing with input changed
time.
Refer to 5-2-2 Setting the I/O Refreshing Methods on page 5-7 for information on how to set an I/O
refreshing method.
Also, using the NX Unit operation settings, set the edge to read the input changed time or operation
mode.
Refer to NX Units in Input Refreshing with Input Changed Time on page 6-12 in 6-3 List of Settings on
page 6-7 for details on the settings.
Do not set the DC enable setting to Disabled (FreeRun). If it is set to Disabled, the input
refreshing with input changed time will not operate correctly. However, an error does not occur
even if it is disabled.
If the DC enable setting is set to Disabled (FreeRun), the input values reflect the actual input
status, but the input changed times retain the default values and do not change.
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