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38
Using a Memory Unit
Section 2-5
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).
Writing Screen Data to a
Memory Unit Using
Automatic Transmission
(PT to Memory Unit)
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.
1,2,3...
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.
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.
SW1-4 ON: System program
OFF: Screen data
SW2-3 ON: Bank 1
OFF: Bank 0
SW2-4 ON: System/Screen transmitted simultaneously
OFF: System/Screen not transmitted simultaneously
4
3
2
1
ON
SW1
SW2
4
3
2
1
ON
Summary of Contents for NT20
Page 1: ...Programmable Terminal Cat No V091 E1 01 NT20 USER S MANUAL ...
Page 2: ...NT series Programmable Terminal User s Manual Produced March 2007 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 9: ...x TABLE OF CONTENTS ...
Page 15: ...xvi ...
Page 21: ...xxii EC Directives 6 ...
Page 37: ...16 Before Operating Section 1 6 ...
Page 153: ...132 Transferring the Resource Data Section 3 11 ...
Page 185: ...164 Numeral Setting Section 4 8 ...
Page 267: ...246 Key to Programs Section 6 8 ...
Page 281: ...260 Specifications Appendix A ...
Page 285: ...264 Transporting and Storing PTs Appendix C ...
Page 303: ...282 Function Restrictions Depending on the Support Tool Appendix I ...
Page 307: ...286 Index ...
Page 309: ...288 Revision History ...