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M u l t i - f u n c t i o n a l P o we r M e t e r D P M - C 5 1 0 O p e r a t i o n M a n u a l
The following table lists the symbols used in the diagram.
Symbol
Description
3.3.2 Communication Characteristics
Communications Specifications
Max. Communication
_3
_3
Distance
Max. Connection
Number
Communication
Protocols
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 12–24 AWG.
3 - 6
Current
Grounding
transformer
1200 m
32
Modbus RTU
03, 06, 10
Ter minal Resistor
Terminal
Voltage
block
transformer
Baud Rate
9600, 19200, 38400 bps
Data Length
8-bits
Parity
None, Odd, Even
Stop Bits
1
Fuse
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