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[DESIGN PRECAUTIONS]
Do not install the control lines or communication cables together with the
main circuit or power lines, or bring them close to each other.
Keep a distance of 100mm (3.94inch) or more between them.
Failure to do so may cause malfunctions due to noise.
If having read register R outside the allowable range with the MOV
instruction, the file register data will be FFFF
malfunctions. Pay attention not to use any out-of-range file register when
designing sequence programs. For instruction details, refer to the
programming manual.
When an output module is used to control the lamp load, heater, solenoid
valve, etc., a large current (ten times larger than the normal one) may flow at
the time that the output status changes from OFF to ON. Take some
preventive measures such as replacing the output module with the one of a
suitable current rating.
[INSTALLATION PRECAUTIONS]
Use the PLC under the environment specified in the user's manual.
Otherwise, it may cause electric shocks, fires, malfunctions, product
deterioration or damage.
Hold down the module loading lever at the module bottom, and securely
insert the module fixing latch into the fixing hole in the base unit.
Incorrect loading of the module can cause a malfunction, failure or drop.
When using the PLC in the environment of much vibration, tighten the
module with a screw.
Tighten the screw in the specified torque range. Undertightening can cause a
drop, short circuit or malfunction. Overtightening can cause a drop, short
circuit or malfunction due to damage to the screw or module.
Connect the extension cable to the connector of the base unit or module.
Check the cable for incomplete connection after connecting it.
Poor electrical contact may cause incorrect inputs and/or outputs.
Insert the memory card and fully press it to the memory card connector.
Check for incomplete connection after installing it.
Poor electrical contact may cause malfunctions.
Be sure to shut off all phases of the external power supply used by the
system before mounting or removing the module. Failure to do so may
damage the module.
Do not directly touch the conductive part or electronic components of the
module.
Doing so may cause malfunctions or a failure of the module.
CAUTION
. Using this as it is may cause
H
CAUTION
A-3
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