Omron NJ Series User Manual

2-29
2 CPU Unit Operation
NJ-series CPU Unit Software User’s Manual (W501)
2-6 Operation for CPU Unit Status
2
2-6-3 Operating Modes
The following table shows how the Retain attribute affects the variable values when the operating mode
is changed between RUN mode and PROGRAM mode.
*1 The system-defined initial values of variables depend on the data types of the variables. Refer to When the Ini-
tial Value Specification Is Left Blank on page 6-59.
Refer to 6-3-9 Changes to Variables for Status Changes for the values that variables take when the sta-
tus of the CPU Unit changes.
When operation starts after the power supply is turned ON, the CPU Unit operates in the operating
mode that you specify in the Controller Setup. During normal operation, you change the operating
mode for different purposes. You use the Sysmac Studio to set and change the operating mode.
 Operating Mode Setting after the Power Supply Is Turned ON
When the CPU Unit starts operating after the power supply is turned ON, the CPU Unit operates in
the operating mode that you set as the Startup Mode. Specify RUN mode or PROGRAM mode in
the Startup Mode setting in the Operation Settings in the Controller Setup. Refer to 4-2-2 Control-
ler Setup for details on the Startup Mode setting.
 Changing the Operating Mode during Operation
You can change the operating mode from the Sysmac Studio. Select the RUN mode or PROGRAM
mode from Controller - Operating Mode on the menu bar.
Precautions for Safe Use
Always confirm the safety of the controlled system before you change the setting of the Startup
Mode or the current operating mode.
You can check the operating mode with the RUN indicator on the CPU Unit or the Sysmac Studio.
 Checking the RUN Indicator
The RUN indicator on the CPU Unit indicates the operating mode as given below.
Retention of Variable Values during Changes in Operating Mode
Retain attribute of
variable
Values of variables
Non-retain If initial values are set, the variables change to the initial values.
If no initial values are set, the variables change to the system-defined initial values.
*1
Retain The values before the operating mode changed are retained.
Setting and Changing the Operating Mode
Checking the Operating Mode
RUN indicator
status
Operating mode
Not lit PROGRAM mode
Lit RUN mode

Omron NJ Series Specifications

General

Program Capacity	Up to 128 MB
SD Card Slot	Yes
Power Supply Voltage	24 VDC
Motion Control	Yes
USB Ports	1
Operating Temperature	0°C to 55°C
Communication Interfaces	Ethernet/IP, EtherCAT, USB
Safety Function	Optional
Storage Temperature	-20°C to 75°C
Communication Ports	USB
Dimensions	Varies by model
Weight	Varies by model