81Barcode Handy Terminal “2: M1 KEY” - ”5: M4 KEY”: Defining the Mx key functions1. Select “2: M1 KEY” to “5: M4 KEY” at the SET KEY menu and thenpress the ENT key.The SET Mx KEY menu screen on the right displays.(In the example on the right, “2: M1 KEY” has been selected.)The highlighted setting will be the current setting.“1: None”:Key entry will be ignored.“2: Trigger Switch”:Sets the magic key as the trigger switch.“3: Shift Key”:Sets the magic key as the SF key.“4: Enter Key”:Sets the magic key as the ENT key.“5: Backlight Key”:Sets the magic key as the backlight function ON/OFF key.“6: MENU”:Sets the magic key as a key used to start up the “Speaker/Vibrator/Backlight Adjustment Screen”.“7: Clear Key”:Sets the magic key as the C key.2. Use the cursor keys ([▲] [▼]) or numerical keys ([1] [2] [3] [4] [5] [6] [7]) to highlight the item tobe set, and then press the ENT key.The selected item will be set and the screen will return to the SET KEY menu. Magic keys (M1 to M4)Magic keys (M1 to M4) can be set to function as the trigger switch, SF key, ENT key, backlight functionON/OFF key, MENU key or BS/C key.If the M1 key is defined as the backlight function ON/OFF key, pressing the M1 key enables or disablesthe backlight function.In user programs, data strings can be also assigned to these magic keys.Magic keys M3 and M4 are set as the trigger switch by default.- Point - The backlight function ON/OFF key can be assigned only to one of the magic keys from M1to M4. The key defined more recently will act as the backlight function ON/OFF key and thepreviously defined key will be ignored.If, for example, the M1 and M2 keys are defined as the backlight function ON/OFF key in thisorder, the M2 key will function as the backlight function ON/OFF key and the M1 key entrywill be ignored.On the other hand, if the M2 and M1 keys are defined as the backlight function ON/OFF keyin this order, the M1 key will function as the backlight function ON/OFF key and the M2 keyentry will be ignored.