68Appendix 2 Control CommandsControl commands refer to commands that are exchanged between the host PC and the scanner via the communicationsline.Some of the control commands that the host PC issues are functionally equivalent to some parameters that can be set withthe QR-coded parameter menu (refer to Chapter 11). Control command settings have priority over settings made with theQR-coded parameter menu.Note that turning off the scanner will clear control command settings so that settings made with the QR-coded parametermenu will take effect unless the PW command is sent to the scanner for saving control command settings into theEEPROM.If commands other than ones listed below are sent to the scanner, the scanner operation is not assured.Transfer DirectionControl Commands Scanner Host FunctionZ(Note 1) (Note 2)READOFFLOFFSwitch to standbyUpon receipt of the Z, READOFF or LOFF command, the scannerswitches to standby as long as the trigger switch control is set toContinuous Reading mode 1 or 2.R(Note 1) (Note 2)READONLONReady to scanUpon receipt of the R, READON or LON command, the scannerbecomes ready to scan as long as the trigger switch control is set toContinuous Reading mode 1 or 2.B1B2B3(Note 3)Sound the beeperWithin 100 ms from the receipt of any of B1, B2 and B3 commands,the scanner beeps for the period specified below.B1: Beep for approx. 80 msB2: Beep for approx. 120 msB3: Beep for approx. 240 msEven if the beeping is prohibited or the scanner is on standby, thebeeper will be able to sound.LB(Note 3)Light the blue indicator LEDWithin 100 ms from the receipt of the LB command, the blueindicator LED lights for approx. 500 ms.LG(Note 3)Light the green indicator LEDWithin 100 ms from the receipt of the LG command, the greenindicator LED lights for approx. 500 ms.LR(Note 3)Light the red indicator LEDWithin 100 ms from the receipt of the LR command, the red indicatorLED lights for approx. 500 ms.VO(Note 3)Drive the vibratorWithin 100 ms from the receipt of the VO command, the vibratoroperates for approx. 180 ms.