Omron ZX Series, Operation Manual

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Reflective Sensor Heads: FUN Mode Functions Section 3-5
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3-5-15 Zero Reset Memory Function
If required, the zero reset level can be stored when the power supply is
turned OFF. Enable this function when the previous zero reset level must
be restored when the power supply is turned ON again.
When this function is enabled, the zero reset level data will be written in
nonvolatile memory (EEPROM). The EEPROM can be written a maximum
of 100,000 times. Therefore, disable this function in order to preserve the
memory when using the zero reset for every measurement.
Even when the zero reset memory function is disabled, the zero reset level
will be rewritten to EEPROM at the following times.
• When the threshold values are set.
• When settings are performed in FUN Mode.
3-5-16 Gain Switch
The gain switch selects either fixed or automatically switching the recep-
tion sensitivity (corresponds to the internal gain). The gain switch should
normally be set to automatic switching.
If automatic is selected, the response time may be delayed when the mea-
sured value and the resultant gain change.
The gain can be fixed to keep the response time constant.
Note: If an appropriate value is not set as the gain for the sensing object color,
distance, etc., the output may soon saturate and reach non-measure-
ment status.
3-5-17 Key Lock Function
The keys can be disabled on the Amplifier Unit. Once the keys have been
disabled, no key input will be accepted until the lock is released.
Use this function to prevent inadvertent changes to settings.
Refer to 4-5-5 Key Lock .