3-4
Displaying I/O Comments
3-4-1
Displaying I/O Comments
64
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.
Summary of Contents for ns series
Page 2: ......
Page 15: ...NS Series Ladder Monitor OPERATION MANUAL LADDER MONITOR ...
Page 18: ......
Page 19: ...Section 1 Introduction ...
Page 31: ...Section 2 Installation ...
Page 43: ...Section 3 Basic Operation ...
Page 93: ...Section 4 Troubleshooting ...
Page 100: ...4 1 Troubleshooting 4 1 4 Error Message When Using Programming Console Function 98 ...
Page 101: ...Appendices ...
Page 106: ...A 2 Standard Models 104 ...
Page 107: ...NS Series Ladder Monitor OPERATION MANUAL I O Comment Extracting Tool ...
Page 109: ...Section 1 Introduction ...
Page 118: ...1 5 Specifications 12 ...
Page 119: ...1 5 Specifications Section 2 Installation ...
Page 121: ...2 1 Installing the I O Comment Extracting Tool Section 3 Basic Operation ...
Page 128: ...3 3 Uninstalling the I O Comment Extracting Tool 22 ...
Page 129: ...Appendix ...
Page 131: ......