Communication Characteristics - Delta DPM-D520I User Manual

D e l t a D i n - r a i l P o we r M e t e r D P M - D 5 2 0 I U s e r M a n u a l

3.3.2 Communication Characteristics


Communications Specifications
Max. Communication
Distance
Max. Connection
Number
Communication
Protocols
_3 _3
Function Code
Note: The 7-bit data length is not available for the Modbus RTU protocol.
Use shielded twisted-pair cables for RS485 communication. When connecting multiple devices in series,

use the wiring method in the following diagram.
Connect the D+ communication terminal for all devices on the same twisted pair cable. Connect the D-

terminals on another twisted pair cable. Ground the cable shield. Install a terminal resistor on the terminal
device as shown.
Use cables with a diameter of 14–28 AWG.

3 - 6
1200 m
32
Modbus RTU/ASCII,
03, 06, 10, FE
2400, 4800, 9600, 19200,
Baud Rate
38400 bps
Data Length 7-, 8-bits
Parity None, Odd, Even
Stop Bits 1, 2