Omron ns series User Manual

3-4 Displaying I/O Comments
3-4-1 Displaying I/O Comments
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3-4 Displaying I/O Comments
Up to 65,535 global comments and 65,535 local comments can be displayed by the
Ladder Monitor.
I/O comments can be displayed in the ladder display area in three lines or in one line, or
not displayed at all. To display details on I/O comments, press the instruction and
operand areas in the program section currently displayed.
For program sections with offset addresses specified for the operands, the I/O comments
of the start addresses will be displayed.
3-4-1 Displaying I/O Comments
Either of the following methods can be used to display I/O comments.
• Reading I/O comments from a PLC symbol table
• Displaying I/O comments from an I/O comment file that was created using the I/O
Comment Extracting Tool

Reading I/O Comments from a PLC Symbol Table
1. Press the Ladder Monitor Menu Button and select I/O Comment Reading from the
menu.
2. The I/O comments will be read from the PLC symbol table. If either 3-line display or
1-line display is set as the display method, the I/O comments will appear on the
screen.
Note
• In order for I/O comments to be read from the PLC, it is necessary for the symbol
table to be downloaded to the PLC in advance. I/O comments cannot be read from
a PLC if no symbol table has been downloaded to the PLC or if the PLC does not
support symbol table downloads. In that case, it is possible to use the I/O Comment
Extracting Tool display an I/O comment.
• Do not register more than one symbol for the same address in the symbol table. If
two or more symbols with the same address are registered, an unintended I/O
comment may be displayed for the address displayed by the Ladder Monitor (i.e., a
different I/O comment for the same address).
• The Ladder Monitor searches the PLC Memory Card, EM file memory, and
comment memory in order, and reads the I/O comment data from the first symbol
table that is found.

Displaying an I/O Comment File Created Using the I/O Comment
Extracting Tool
From among the I/O comment files saved on a Memory Card or in the PT (NS-V1/V2
Series or NSJ Series only), select the I/O comment file to be used by the Ladder Monitor
using the following procedure.
The I/O comment file selection can be set so that the selection is made individually for
each host. This setting is not required when I/O comments are read from the PLC.
1. Press the Menu Button and select Various Settings from the menu.

Omron ns series Specifications

General

Brand	Omron
Model	ns series
Category	Touch terminals
Language	English