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SETTINGS AND PROCEDURES PRIOR TO OPERATION4
4 - 1
4
MELSEC-F
4 SETTINGS AND PROCEDURES PRIOR TO OPERATION
This chapter explains the settings and procedures required prior to operating the
Ethernet module in a system.
4.1 Loading and Installation
This section explains precautions for Ethernet module handling from unpacking to
installation, as well as the installation environment common to all modules.
For more details on module mounting and installation, refer to the Installation Manual
supplied with the Ethernet module.
4.1.1 Handling precautions
The following explains precautions for Ethernet module handling:
(1) Since it is made of resin, the Ethernet module case should not be dropped or
subjected to any shock.
(2) Tighten the module terminal and fixing screws within the following specified
clamping torque range:
Screw location Tightening torque range
External power supply terminal screw (M3 screw) 0.5 to 0.8 N•m
Unit-affixing screw ( M4 screw ) 0.78 to 1.08 N•m
DANGER
Do not touch the terminals and connectors while the power is on.
Doing so may result in electric shocks and malfunctions.
Make sure to turn off all phases of the external power supply before cleaning or
re-tightening the screws. Failure to do so may cause damages or malfunctions of
the module.
If the screws are loose, it may cause the module to short circuit, malfunction or
fall off.
Tightening the screws excessively may damage the screws and/or the module
and cause the module to short circuit, malfunction or fall off.
Do not write any data in the "System area" of the buffer memory on the module.