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VMT8000 series
4.6 Serial interface COM1
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The serial interface is used for digital data transmission. The RS232 interface can be connected by
using a shielded 9-pin SUB-D cable.
Information:
Pin 9 of the serial interface connector can be used for additional connection
of a 5V power supply, e.g. for operating a serial barcode scanner. The COM
+5V switch in the service slot of the device must be put in the ON position in
order to use this function. A subsequent restart of the computer is required in
order to properly activate this function.
Interface
COM1
PIN number
1
2
3
4
5
6
7
8
9
Information:
This interface is not electrically isolated.
4.7 Heater (optional)
As an option, the device can be equipped with a heater. The heater can be used in, for example, the
low-temperature range down to -30°C. The exact temperature ranges are specified in the data sheet.
The heater is controlled automatically by the firmware. If the temperature falls or rises to a predefined
value, the heater is activated or deactivated. Intervention by the user is not necessary.
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IRQ
Address
4
3F8h
Signal name
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RI or + 5V DC
(max. 1 A)
17
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