mensor DPG 2400, Руководство по эксплуатации

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16 Operating Instructions DPG 2400 Series
Digital Pressure Gauge
DPG 2400 Series
5.4 Electrical Connections
For RS-232 serial port operation, connect the DPG 2400 to the host computer per
Figure 5.4a. Notice that the host TRANSMIT line is connected to the DPG 2400
RECEIVE line (TX to RX), and vice versa.
The power connector is a 2.1 mm standard power jack. The center pin is +12 VDC and
the outside is ground (see Figure 5.4b).
2
2
Host
DB-9
3
3
5 5
DPG 2400
J1
SHLD
GND
GND
TX
RX
TX
RX
Female Male
Figure 5.4a - RS-232 Hookup
For RS-485 serial port operation, connect the DPG 2400 to the host computer per
Figure 5.4b.
2
1
9
2
1
Host
DB-9
3 3
5 5
9
DPG 2400
J1
RD(B)
GND GND
TD(A)
RD(B)
RD(A)
TD(B)
RD(A)
TD(B)
TD(A)
Female
Male
Figure 5.4b - RS-485 Hookup
5.5 Power On
After the pressure connections are secure,
press the power switch ( ). The DPG 2400 will run
through a brief initialization sequence and then will
display a pressure reading.
Figure 5.5 - DC Input