Omron NT20M - Manual (Page 23)

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4. Create the required screens, making all settings required for direct con-
nection.
5. Save the screens.
6. Transfer the screens to the PT or write them to ROM.
Conversion Screen files that were created with direct connection turned OFF can be
loaded with direct connection turned ON to convert the screens for use with
direct connection. Once files are created for or converted to direct connec-
tion, they cannot be loaded with direct connection turned OFF in the Tool
Settings and cannot be converted back for use without direct connection.
Indication on Displays Displays on the File Selection Display and the Screen Selection display will
indicate whether or not direct connection has been set. If direct connection
has been set, “-O” (for OMRON) will be added after the PT model name fol-
lowing the “File List” title on the File Selection Display. The help message
area on the Screen Selection Display will also indicate whether or not direct
connection has been used together with the file size.
1-15-1 Specifying PC Addresses for Direct Connection
The function keys are allocated as shown in the following table when specify-
ing bit and word addresses in PC memory. The values in parentheses indi-
cate the maximum word address possible for the largest PC memory. Actual
memory sizes vary, however, with the model of PC. Refer to your PC’s opera-
tion manual for specific limits.
Key Area
F1 AR (511)
F2 HR (99)
F3 LR (63)
F4 DM (9999)
F5 CNT (1023)
F6 TIM (1023)
F7 CIO, IR, SR (2555) (displayed as
I/S)
Home None
The areas that can be designated for direct connection are as shown in the
following table.
Item Memory unit Designation
Lamps Bit IR, SR (CIO), AR, or LR bit addresses.
DM word address can also be designated with
bit specifications
Touch switches
bit specifications.
Timers and counters cannot be designated.
(See note.)
Numeral display Word IR, SR (CIO), AR, LR, or DM word addresses.
Bar graphs
( )
Timer and counter numbers can also be
specified to designate PVs
Numeral editing
specified to designate PVs.
Character string
display IR, SR (CIO), AR, LR, or DM word addresses.
Timer and counter numbers cannot be
specified.
Note If touch switches are set to write to bits in the DM area (notify bits), the touch
switch will control the status of the specified bit and all other bits in the speci-
fied word will be turned OFF (0).
Direct Connection Section 1-15