Acrel ADL3000-E - Communication Description; ADDR List

11
transformer
Note: Customers can choose None or Even under Modbus protocol.
9 Communication description
The meter adapts MODBUS-RTU protocol, and the baud rate can be chosen from 1200bps、
2400 bps、4800 bps、9600bps and 19200 bps. The parity is None.
The meter needs shielded twisted pair conductors to connect. Customers should consider the
whole network
’
s parameters such like communication wire
’
s length, the direction, communication
transformer and network cover range, etc.
Note:
Wiring should follow the wiring requirements;
Connect all the meter in the RS485 net work even some do not need to communication, which is
benefit for error checking and testing;
Use two color wires in connecting wires and all the A port use the same color.
No longer than 1200 meters of RS485 bus line.
9.1 ADDR list
MODBUS-RTU protocol has 03H and 10H command to read and write registers respectively.
The following chart is registers
’
address list:
Address
Variable
Length
R/W
Notes
0000H
Current total active energy
4
R
E=data*PT*CT*0.01
Data：data read in
the communication,
Pt：voltage ratio
CT：current ratio
Unit:kWh (active)
kVarh(reactive)
This formula is
applicable to all
electric energy
values.
0002H
Current spike total active energy
4
R
0004H
Current peak total active energy
4
R
0006H
Current flat total active energy
4
R
0008H
Current valley total active energy
4
R
000AH
Current forward active total energy
4
R
000CH
Current forward active spike energy
4
R
000EH
Current forward active peak energy
4
R
0010H
Current forward active flat energy
4
R
0012H
Current forward active valley energy
4
R
0014H
Current reversing active total energy
4
R