112
Alarm
output
<OUT1>
<OUT2>
*2
Display
Lighting alarm mark / Blinking backlight
Output signal
2 points; set each
・
normal; OFF
・
alarm; ON
Output capacity
100mA, 30V AC/DC
Communication
OUT1
DT00298 (MEWTOCOL), 12Ahex (MODBUS)
normal; 0, alarm; 1
OUT2
DT00299 (MEWTOCOL), 12Bhex (MODBUS)
normal; 0, alarm; 1
*1 Available when 30-min demand is selected.
*2 Alarm output can’t be set when peak demand is selected.
8.6 Communication Specifications
<RS485>
Interface
Conforming to RS485
Communication method
Half-duplex
Synchronous system
Synchronous communication method
Isolation status
Isolated with the internal circuits
Protocol
MEWTOCOL, MODBUS(RTU), DL/T645-2007 *1
(select with setting mode)
Number of connected unit
99 (max.) *2
Transmission distance
1200m *3
Transmission speed
38400, 19200, 9600, 4800, 2400, 1200bps
(select with setting mode)
Transmission
format
Data length
8bit (fixed)
Parity
Not available / odd number / even number
(select with setting mode)
Stop bit
1bit, 2bit (select with setting mode)
*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
Conform to USB2.0 standard
Connector shape
USB series MiniB
Insulation method
Insulated to internal circuit
Transmission speed
12Mbps(Full
‐
Speed)
Transmission function
Computer link (MEWTOCOL)
*Install the dedicated USB driver before using USB port.
*Do not ground the signal wire of USB communication.
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