Newland EM3000 Spezifikationen PDF herunterladen (Seite 33)

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Page 24

Software Interface

Trigger EM3000 for a Reading

Auto Scan

The Engine can be in Auto mode. (See Configuration section for detail.) When the ambient light

changes, the Engine will automatically make a read. If a valid read is found, the default function is to

send the decoded barcode messages.

Continuous Scan Mode

Another scan mode is continuous scan mode. When the Engine is in this mode, it will keep acquiring

images and trying to read a code. When it reads a code, it sends the code to the serial port.

EM3000 will start a reading when the trigger Pin of the flexible cable is pulled low (hard trigger) or when

EM3000 is in the sensor mode and it senses the trigger condition is met (sensor scan).

Hard Trigger

If the trigger line is connected to an output port of external device, the control software of the external

device (Host) can pull the line low. The Engine will start to read barcode after 10 ms. The engine will

keep reading until it read a barcode.

Mark Definition Time

tBUZ Beeper Pulse Time 80ms

tData Data Uploading Time Determined by data length and baud rate

t1 Delay 1 1 ms

t2 Delay 2 50 ms

t3 Delay 3 50 ms

t4 Delay 4 50 ms

t5 Delay 5 1 ms

Read Timing Diagram

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 158 159

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Newland EM3000 Spezifikationen Seite 33