Hold Memory Tab Page (Nv4W/Nv3Q Only) - Omron NV Series Programming Manual

Setting the NV Configuration from the NV-Designer

6-2-10 Hold Memory Tab Page (NV4W/NV3Q Only)

Setting the Hold PLC
Memory Value Function
Note
Open the Hold Memory Tab Page from the NV Configuration Dialog Box to set
the memory to be held.
Item
Hold PLC Memory This function is used to backup PLC memory in the PT.
Value
• Off
The data in PLC memory is not held.
• On
The data from PLC memory is held. You can back up up to
24 words from the specified address.
Hold NV Internal This function is used to backup PT memory in the PT. Data
Memory Value Memory and Internal Relay (i.e., CIO Area) are set separately.
• Off
The data in PT internal memory is not held.
• On
The data in PT internal memory is held. You can back up
from the specified address to the last address.
The hold PLC memory value function is used to back up the specified PLC
memory data in the SRAM of the PT. The PT can back up memory contents
that is lost from the PLC when there is a power interruption. PLC memory
data held by the PT is automatically written to the PLC memory when power is
turned ON again.
If the On Option is selected for Hold PLC Memory Value, a setting will be dis-
played to enter the first address and number of words. Set the first address in
the PLC and number of words to back up.
An NV-BAT01 Battery (sold separately) is required to back up data.
Description
If the On Option is selected for Hold PLC
Memory Value, this setting will be displayed.
Either enter the setting directly or click the
button on the right of the box and enter the
setting from the dialog box that will appear.
Section 6-2
91