Hardware manual

PLC Ladder Monitor Operation Manual 4-2
Ladder Monitor Restrictions
• Depending on the version, your programming tool may not be able to display ladder
programs. For the versions supporting programming tools, see the Pro-face support site
“Otasuke Pro!”. For the instructions that you can monitor, see the PLC manual.
• To use this feature, your CF Card must have 100 MB or more of free space.
• To monitor a bit device used in a FUNC instruction, the Word data of the bit address
divided by 16 is displayed in hexadecimal notation.
• When reading the ladder program, you cannot read only the comment file.
• Up to 24 lines are displayed per circuit. The 25th line and after are not displayed. If you
specify a device located in the 25th line or after when searching for a device, the start of
the circuit where the device is located will be displayed but the specified device itself will
not be displayed.
• The power flow is shown by the contact/coil in bold, but the lines connecting contacts to
contacts do not change.
• The time taken for a screen capture depends on the image quality and screen size. The file
size for a screen quality of 80 will be approximately 200 KB and the capture will take
about 5 to 6 seconds.
• If you continuously touch the capture (snapshot) button, the screens may not be captured
properly. Allow some time between captures (snapshots).
• Ladder program and comment password settings are not supported. When a [Stop Read/
Write] password is used, reads will cause a communication error.
• Please use CF Cards manufactured by Pro-face (Digital Electronics Corporation of
Japan.) If using another company’s CF Card, damage may occur to the CF Card data.
• Devices such as indexing device or indirectly specified device will display the original
monitor data values. (D200Z0 will display the monitor data D200, @D100 will display
the monitor data D100.)
• Monitoring the ladder program from the same PLC with plural display, the
communication error may appear.