Mindeo FS390, User Manual

Page: 24 / 127

16
5 Operation of scanner
The following cases demonstrate how a host operates an scanner quickly and easily.
5-1 Beep
① Host sends a <BEL> (0x07) character.
② After receiving <BEL> character, scanner returns a <BEL> character and an <ACK> (0x06)
character, and then Scanner beeps.
RXD
(Host TXD)
TXD
(Host RxD)
<BEL>
<BEL><ACK>
Figure 5-1 Beep timing
5-2 Request revision
① Host sends a Firmware Version List command(0x16, 0x4D, 0x0D, 0x25, 0x25, 0x25, 0x56,
0x45, 0x52, 0x2E).
② After receiving the command, scanner responds with firmware version.
RXD
(Host TXD)
TXD
(Host RXD)
REQUEST_REVISION
Firmware version
Figure 5-2 Request revision timing
5-3 Decode by pulling down pin TRIG
① Host pulls down pin TRIG.
② Then scanner turns on LED illumination and starts decode. The LED illumination will be turned off
if either Scan standby duration expires or scanner succeeds in decoding.
TRIG
LED illumination
Figure 5-3 Pull down pin TRIG and start decode timing