Denso BHT-300B User Manual page 82

Defining the function of M1 , M2 , M3 (left-hand trigger switch), or M4 (right-hand trigger switch)
key
Magic keys (M1 through M4)
The M3 and M4 keys are assigned the trigger switch function by default. You can make them serve as a
SF key, ENT key, or backlight function on/off key.
If you define the M1 key as a backlight function on/off key, pressing the M1 key activates or deactivates
the backlight function.
In user programs, a string data can be also assigned to these magic keys.
The backlight function on/off key can be assigned only to any one of M1 through M4 keys. The key
defined more recently will act as a backlight function on/off key and one defined earlier will be
ignored.
That is, if you define the M1 and M2 keys as a backlight function on/off key in this order, the M2 key
will work as a backlight function on/off key and the M1 key's entry will be ignored.
On the SET KEY menu, select "2: M1 KEY," "3: M2 KEY," "4: M3
KEY" or "5: M4 KEY" to call up the screen as shown at left. (This
example appears when the "4: M3 KEY" is selected.)
Highlighted is the current setting.
The M1 , M2 , M3 or M4 key can function as listed below.
[1] None: The key entry will be ignored.
[2] Trigger Switch: As a trigger switch.
[3] Shift Key: As a SF key.
[4] Enter Key: As an ENT key.
[5] Backlight Key: As a backlight function on/off key.
Select a desired setting by using the numerical keys or F5 and F6
keys, and then press the ENT key. The screen returns to the SET
KEY menu.
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