NAiS GT10, Technical Manual

Page: 128 / 195

GT10/GT30 6.2 Entering Configuration Settings with GTWIN
105
Hold PLC Device
The Hold PLC Device function reads the values for the specified internal PLC device
to the SRAM in the GT30, and backs up the values.
Off ––– PLC devices are not held.
On ––– PLC devices are held (up to 24 words)
If “On” is selected for the above Hold PLC Device setting, “Device” and “Number of
Word” parameters are displayed. Clicking on the
button displays a dialog box like
that shown below, where the type of initial device, the address, and the number of words
can be specified.
Device Setting dialog box
Click on the button to display the pull–down
menu, and select the device from that menu.
Enter the address using the ten–keys.
The button functions as a backspace
key when entering addresses.
The button acts as a Clear key.
CAUTION
Data for PLC devices held in the GT30 will be written to the internal
PLC device the next time that the power supply is turned on.
The data held for the internal PLC device is backed up by means of
a lithium battery. The service life of the battery is approximately two
years. For detailed information, please see “What the Battery Does
(DT30)” on page 130.
6.2.8 GT Configuration Setting: “GT Internal Device Hold”
Clicking on the “GT Internal Device Hold” tab in the “GT Configuration Settings” dialog
box displays the screen shown below. “GT Internal Device Hold” is a function that holds
the values for an internal device (GDT or GWR) in the GT main unit.