Eastron SDM72D-M User Manual V1.1
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RS485 Serial
–
Modbus RTU
This unit uses an RS485 serial port with Modbus RTU protocol to provide a means of remotely monitoring and
controlling the Unit
Set-up screens are provided for setting up the RS485 port.
Pulse output
The unit provides pulse output for active kWh. The Pulse output is passive type.
Pulse constant:
1000imp/kWh
100imp/kWh
10imp/kWh
1 imp/kWh
Pulse width: 60, 100, 200mS
Note: when the pulse constant is set to 1000imp/kWh, the pulse width should be 35ms and cannot be adjusted.
Pulse output type can be set to : total kWh, import kWh, export kWh.
RS485 Output for Modbus RTU
For Modbus RTU, the following RS485 communication parameters can be configured from the Set-up menu:
Baud rate
1200,2400, 4800, 9600, 19200 bps
Parity
none (default)/odd/even
Stop bits
1 or 2
RS485 network address
nnn
– 3-digit number, 001 to 247
Modbus™ Word order
Hi/Lo byte order is set automatically to normal or reverse. It cannot be configured
fro
m set up menu.
Environment
Operating temperature
-25
℃
to +55
℃
Storage and transportation temperature
-40
℃
to +70
℃
Reference temperature
23
℃±
2
℃
Relative humidity
0 to 95%, non-condensing
Altitude
up to 3000m
Warm up time
10s
Installation category
CAT III
Mechanical Environment
M1
Electromagnetic environment
E2
Degree of pollution
2
B+G e-tech GmbH (EASTRON Germany)
•
www.eastron-germany.de
• [email protected] • Fax: 03574 467550