Omron NT20 User Manual page 59

Using a Memory Unit
Writing Screen Data to a
Memory Unit Using
Automatic Transmission
(PT to Memory Unit)
1,2,3...
ON
1
SW1-4 ON: System program
38
Note The Memory Unit stores system program or screen data for one PT
in each of Areas (bank 0, bank 1). (The total data storage is for two
PTs.) SW2-3 sets which of these two banks is used for automatic
transmission.
Reference:
• In the following cases, a mode setting error occurs.
• More than one of the SW1-1 to SW1-3 switches are set to ON.
• None of the SW1-1 to SW1-3 switches are set to ON.
• In the following case, a protect setting error occurs.
Transmitting to the write destination has been disabled by the setting for
SW2-1 or SW2-2.
• In the following cases, a data transmission error occurs.
• An attempt is made to transmit data other than the system program to
PT System Program Area.
• An attempt is made to transmit the system program to PT Screen Data
Area.
• For details on mode setting errors and protect setting errors, refer to
Errors When Using a Memory Unit (page 42).
In this mode, system program or the screen data in the NT20 is forcibly written
to the Memory Unit irrespective of the setting status of the NT20.
This mode is convenient if the touch panel is broken and touch switch opera-
tion is not possible, or if someone unfamiliar with touch switch operation at the
operation site is using the system.
Reference:
When screen data is written to the Memory Unit, the data that has been
stored in the specified Area up until that point is lost (if the data is written into
only one Bank, the other Bank will not be affected).
■
Method of Execution
Use the following procedure to write the system program or screen data in the
NT20 to the Memory Unit by automatic transmission.
1. Check that the power supply to the NT20 is OFF, then set the DIP switches
of the Memory Unit as follows after installing Memory Unit to NT20.
ON
2 3 4
1
SW1
SW2
OFF: Screen data
It is not strictly necessary to set SW2-1 to OFF (to disable writing to the
PT), but it is recommended to do so to avoid loss of data in the event of
operating errors.
Reference:
• Setting SW2-4 to ON (System/Screen transmitted simultaneously) dis-
ables the setting of SW1-4.
• Setting SW2-4 to ON (System/Screen transmitted simultaneously) dis-
ables the setting of SW2-3, writes the system program into bank 0, and
the screen data into bank 1 at all times.
2 3 4
SW2-4 ON: System/Screen transmitted simultaneously
OFF: System/Screen not transmitted simultaneously
SW2-3 ON: Bank 1
OFF: Bank 0
Section 2-5