Digital – Meriam M1500 Digital Pressure Transmitter User Manual

Page 20

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16

Digital

Digital

Digital

Digital Wiring

Wiring

Wiring

Wiring Diagrams

Diagrams

Diagrams

Diagrams

RS

RS

RS

RS-

-

-

-23

23

23

232

2

2

2 Communication

Communication

Communication

Communication

For RS-232 communication use the terminal block for power and the DB-9 connector for communications. Provide 8-
36 VDC

power (20 mA minimum) by connecting to the +supply to the PWR+ terminal. Connect the –supply to the

PWR- terminal adjacent to PWR+. For communications connect the receiving device to the M1500’s DB-9 (female)
serial port (see DB-9 Pin Out Table above) or to the M1500’s RX and TX terminals. Terminal labels follow RS-232
standard TIA/EIA-232.The digital interface draws 20 mA of current or less.

RS

RS

RS

RS-

-

-

-485 Communication

485 Communication

485 Communication

485 Communication

For RS-485 communication use the terminal block for power and communication. Provide 8-36 VDC

power (20 mA

minimum) by connecting to the +supply to the PWR+ terminal. Connect the –supply to the PWR- terminal adjacent to
PWR+. For communications connect the receiving device to the M1500’s A and B terminals. The digital interface
draws 20 mA of current or less.

USB Communication

USB Communication

USB Communication

USB Communication
Connect to the USB type B female connector of the M1500. Use with
high power (500 mA) USB ports or powered USB hubs only.

5

4 3 2 1

9

8 7

6

DB9 Pin Out

RS-232

DCE

1

GND

---

2

RX

Out

3

TX

In

5

GND

---

RS-485 B(-)

RS-485 A(+)

RS-232 RX

RS-232 TX

Vin(8-36V)

GND

Chassis GND

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