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7.4Communication application details
In the design of the instrument,the communication address table is unified.According to the following
introduction,the user can conveniently realize the functions of telemetry,remote communication,remote control and
so on.
7.4.1Communication description
Communication of ACR Harmonic meters adopt MODBUS-RTU Communication protocol, MODBUS
protocol define check code, data sequence etc. In detail, these are necessary content for specific data
exchange.
Address
Name
Type
Note
word
0
Meter address
R/W
Network node meter Address (001--127)
1
1
Communication speed
R/W
0--4800bps
3--38400bps
(Default
Communication speed).
1--9600bps
4--2400bps
2--19200bps
5--1200bps
1
2
Communication
check mod
R/W
0--
No parity bit(Default mode)
1-Odd parity bit;
2-
Even parity bit
3--2 bits
1
3
Wiring mode
R/W
0--
3-phase 3—wire
1--
3-phase 4-wire.
1
4
Secondary side rated voltage
Ue
R/W
0--100V
2--660V
1--400V
1
5
Secondary side rated current
value Ie
R/W
0--1A
1
6
Primary side rated voltage PU
R/W
1
~
65000,decimal point 2 digits ，
corresponding 0.01-650.00kV
1
7
Primary side rated current
value PI
R/W
1
~
65000A
1
8
Backlight delay time
R/W
Setting as 0,backlight lights;
Setting as 1-255,after 1-255 seconds
backlight go out.
1
9
Relay 1 delay time
R/W
Setting as 0,relay 1 adopt level control
mode;
Setting as 1-255,relay adopt pulse control
mode,Unit :0.01second.
1
10
Relay 2 delay time
R/W
1
11
Relay 3 delay time
R/W
1
12
Relay 4 delay time
R/W
1
14-15
Voltage primary side and
R
Float mould
2