□
□
□
□
Modbus
－
－
－
－
RTU Mode Protocol.
Start byte: 1bit
，
Data byte: 8 bits
，
Stop byte: 1bit.
Without parity check bit
Master sends message to Meter
ADDRESS
8Bits
01H
FUNCTION
8Bits
03H
START_ADD
16Bits
00H 01H
DATA number
16Bits
00H 02H
CRC16(16Bits)
LSB MSB
90H 08H
Meter responds to Master.
ADDRESS
8 Bits
01H
FUNCTION
8 Bits
03H
BYTE_COUNT
8 Bits
02H
DATA
4 Byte
00H 00H 11H 1DH
CRC16
LSB MSB
35H 69H
Values/Address Cross-reference
(Refer to ModScan32)
Address
Length
Name
Instruction
(R/Read .W/Write)
40002
1Word
V value
R
40003
1Word
A value
R
40004
1Word
W value
R
LO-WORD
40005
40006
2Word
WH
HI-WORD
R
40007
1Word
Decimal
point
0000 0000 0000 0000
byte3 byte2 byte1 byte0
Byte3= no function
Byte2=A-POINT
Byte1=B-POINT
Byte0=C-POINT
R
□
□
□
□
Connection Diagram
AC
&
M
Auto Control
&
Measurement
Model:
Model:
Model:
Model:DMDPW
DMDPW
DMDPW
DMDPW
DC
DC
DC
DC Multifunction Power Meter
Multifunction Power Meter
Multifunction Power Meter
Multifunction Power Meter
Operation Manual
Operation Manual
Operation Manual
Operation Manual
3F,NO.51-6,Fu Shing Rd,Hsin-Tien
City,Taipei,Taiwan,R.O.C
TEL：02-22189972
FAX：02-22189973
http//www.acm8668.com
e-mail：[email protected]
