Omron NX1P2 series, Руководство пользователя по оборудованию

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5-1 Processing at Power ON and Power
OFF
WARNING
• Do not touch the terminal section while power is ON. Electrical shock may occur.
• Do not disassemble any of the Units. Particularly the Units contain parts with high
voltages when power is ON or immediately after power is turned OFF. Electrical
shock may occur. There are also sharp internal parts that may cause injury.
5-1-1 Power ON Operation
Precautions for Safe Use
It takes approximately 20 seconds to enter RUN mode after the power supply is turned ON.
During that time, digital outputs on the CPU Rack will be OFF. Note that the slave outputs will
behave according to the setting value.
Use the system-defined variables and the NX Unit device variables in the user program to con-
firm that I/O data communications are established before attempting control operations. Exter-
nal communications are also not performed during startup.
Operation Until Operation Ready Status
Once the Unit power supply to the Unit power supply terminal starts, approximately 10 to 20 seconds
elapses before the CPU Unit enters the operation-ready status. This period is called the
startup status.
The startup time depends on the slave/NX Unit configuration*1, user program, SD Memory Card us-
age, SD Memory Card self-diagnosis usage*2, etc.
While the CPU Unit is in the startup status, the RUN indicator flashes at a one second interval.
*1. Some EtherCAT slaves can set a maximum standby time of 1 to 200 seconds. For the CPU Unit, however, the
operation-ready status exists as soon as the EtherCAT Master Function Module is functioning, regardless of
the standby time of the EtherCAT slaves. For the EtherCAT Master Function Module, slaves that do not start
within the maximum waiting time are treated as having an error.
*2. This function performs self-diagnosis on the inserted SD Memory Card. This is executed if the self-diagnosis
at startup is enabled in the Operation Settings under Configurations and Setup − Controller Setup in the
Sysmac Studio.
The following processing is performed during the startup status of CPU Unit.
Process Description
Self diagnosis at startup Operation is monitored for the following errors: Power Supply Er-
ror, CPU Unit Reset, Hardware Initialization Error, and System In-
itialization Error.
*1
Data check The _RetainFail (Retention Failure Flag) system-defined variable
changes to TRUE when the values of variables for which the Re-
tain attribute was set to retain the values were not retained after
a power interruption.
5 Installation and Wiring
5-3
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
5-1 Processing at Power ON and Power OFF
5
5-1-1
Power ON Operation