Omron NX-EC0112, User Manual

Page: 22 / 468

Precautions for Safe Use
20 NX-series Position Interface Units User’s Manual (W524)
Units that supply power continue to supply power to the Units for up to several seconds after the
power supply is turned OFF. The PWR indicator remains lit as long as power is supplied. Confirm that
the PWR indicator is not lit before you perform any of the above.
• Confirm that the controlled system will not be adversely affected before you perform any of the fol-
lowing operations.
Changing the operating mode of the CPU Unit (including changing the setting of the Operating
Mode at Startup)
Changing the user program or settings
Changing set values or present values
Forced refreshing
• Always sufficiently check the safety at the connected devices before you change the settings of a
slave or Unit.
• Do not exceed the ranges that are given in the specifications for the communications distance and
number of connected Units.
• Refer to the user’s manual for the Communications Coupler Unit for precautions for the safe use of
communications with the connected Communications Coupler Unit.
• When you replace a Unit, start operation only after you transfer the settings and variables that are
required for operation to the new Unit.
• Dispose of the product according to local ordinances as they apply.
Operation
General Communications
Unit Replacement
Disposal