Communication Specifications - Weidmuller Power Monitor Handbuch

Specifications
10.3

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 Chinese power-meter standard. Only DL/T645-2007 is supported.
*2 For a 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 a PLC from our company (which can be connected up to 99 units), up to 99 can be con-
nected. If using this system with other devices, up to 31 can be connected.
*3 Please check the current devices when some commercial devices with an RS485 interface are connected. The
number of connected devices, transmission distance, and transmission speed may be different depending on the
transmission line used.
< USB >
Electric specification
Connector shape
Insulation method
Transmission speed
Transmission function
Note
1) Install the dedicated USB driver before using the USB port.
112
Conforming to RS485
Half-duplex
Synchronous communication method
Isolated with the internal circuits (basic insulation)
MEWTOCOL, MODBUS(RTU), DL/T645-2007 *
(select with setting mode)
2
99 (max.) *
3
1200 m *
38400, 19200, 9600, 4800, 2400, 1200bps
(select with setting mode)
8 bit (fixed)
Not available / odd number / even number
(select with setting mode)
1 bit, 2 bit
(select with setting mode)
Conform to USB2.0 standard
USB series MiniB
Insulated to internal circuit
12 Mbps (full speed)
Computer link (MEWTOCOL)
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