Communication Specifications - Panasonic kw9m User Manual

7.3 Communication Specifications

<RS485>
Interface
Communication method
Synchronous system
Isolation status
Protocol
Number of connected unit
Transmission distance
Transmission speed
Data length
Transmission
Parity
format
Stop bit
*1 MEWTOCOL is the protocol for PLC from Panasonic.
DL/T645 is the China power-meter standard. Only DL/T645-2007 is supported.
*2 For RS485 converter on the computer side, we recommend SI-35 and SI-35USB (from LINE EYE
Co.,Ltd.). When using SI-35,SI-35USB or PLC from our company (which can be connected up to 99
units), up to 99 can be connected. In case using this system with the other devices, up to 31 can be
connected.
*3 Please check with the actual devices when some commercial devices with RS485 interface are
connected. The number of connected devices, transmission distance, and transmission speed may
be different according to using transmission line.
< USB >
Electric specification
Connector shape
Insulation method
Transmission speed
Transmission function
*Install the dedicated USB driver before using USB port.
Conforming to RS485
Half-duplex
Synchronous communication method
Isolated with the internal circuits
MEWTOCOL, MODBUS(RTU), DL/T645-2007
(select with setting mode)
99 (max.) *2
1200m *3
38400, 19200, 9600, 4800, 2400, 1200bps
(select with setting mode)
8bit (fixed)
Not available / odd number / even number
(select with setting mode)
1bit, 2bit (select with setting mode)
Conform to USB2.0 standard
USB series MiniB
Insulated to internal circuit
12Mbps(Full‐Speed)
Computer link (MEWTOCOL)
68
KW9M Eco-POWER METER
*1