Opticon MDI-4000 Series, Руководство по последовательному интерфейсу, Страница: 61 / 139

MDI-4000 Series Serial Interface Manual
49
Read Timing Symbol Descriptions
Symbol Description Min. Typ. Max. Unit
t
1
GR_LEDn signal period 200
*1
- ms
t
2
BUZZERn signal period - 50
*2
- ms
*1
You can configure the GR_LEDn signal period. For more information, see
“Good Read LED” on page 99
.
*2
You can configure the BUZZERn signal period. For more information, see
“Buzzer” on page 97
.
5.6.1 Read Time
Read time sets the amount of time for one readout operation. The operation starts when the
trigger signal is on or when the readout command
“Z” is sent. If no data is output within the
specified time, the readout operation stops.
Read Time Setting Commands
Command Description Notes
Y0 Trigger si
gnal synchronization or “Z” “Y” command control ✓
Y1 1 second
Y2 2 seconds
Y3 3 seconds
Y4 4 seconds
Y5 5 seconds
Y6 6 seconds
Y7 7 seconds
Y8 8 seconds
Y9 9 seconds
YL Read time infinite
YM Read time 10 times
* When auto trigger is enabled and read time is set to
“Y0,” the read time is automatically set by image processing.
5.6.2 Trigger Signal Control
By default, the TRIGn signal determines the read time. When the TRIGn signal is low, the scan
engine reads a barcode.
Figure 31: Trigger Signal Control
When read time is set, you can also set the start time. For more information, see the previous
section,
“Read Time” on page 49
.
Read Time Start Time Commands
Command Description Default
+O Start from TRIGn signal end
✓
+P Start from TRIGn signal start
TRIGn
TRIGn signal duration
Scan time