Using The Ladder Monitor; Starting The Ladder Monitor; Starting The Ladder Monitor From The System Menu - Omron NSJ CONTROLLERS - 03-2008 Operation Manual

Using the Ladder Monitor

9-1

Using the Ladder Monitor

9-2

Starting the Ladder Monitor

1,2,3...
9-2-1

Starting the Ladder Monitor from the System Menu

1,2,3...
174
Ladder monitoring is provided as an expansion function for the NSJ Control-
ler. It includes the following operations:
• The user program in the built-in Controller Section or another PLC is dis-
played in ladder format on the Display Section (10 rows x 8 lines max.).
• The ON/OFF status of bits and the present values of special instruction
operands (words) are displayed
• The location (program sections) to be displayed can be specified (search
function).
• Present values specified words can be displayed and changed, and bit in
specified words can be force-set/reset (multi-point I/O monitoring).
• The PLC operating modes can be changed.
• Errors that occur in the PLC (fatal and non-fatal errors) can be displayed
and cleared.
• I/O comments can be displayed.
Only opening and closing the Ladder Monitor Window are described here. For
details on operations, refer to the NS-series Ladder Monitor Operation Manual
(provided with NS-series Ladder Monitor software).
The ladder monitor function can be used with system version 6.6 and higher
for NSJ12, NSJ10, and NSJ8 Display Sections.
Two methods can be used to start the Ladder Monitor.
1. Select Ladder Monitor from the Special Screen Tab Page of the System
Menu
2. Set $SW0 to 4036 from a user screen.
1. Turn ON the power to the Display Section and press two of the four corners
of the Display Section touch panel simultaneously with the NSJ Controller
in normal operating status to display the system menu.
Section 9-1