ADTEK CM1 Series - RS485 Modbus RTU Mode; Modbus RTU Protocol Details; Parameter Address Table; User Level Parameters (CM1-VA;PR;TR)

CM1-SERIES
26 / 28
Rev 1.3
2018-07-02
■ RS485(Modbus RTU Mode)
■ Modbus RTU Mode Communications protocol
一、 Read instructions by Function 03H (Read Holding Registers)
Request Data Frame ex: Read the display data (0000H start aWord)
SLAVE
Address
FUNCTION
Starting
Address Hi
Starting
Address Lo
No. of Word
Hi
No. of Word
Lo
CRC
Lo
CRC
Hi
01H
03H
00H
00H
00H
01H
84H
0AH
Response Data Frame ex: reading”0”
SLAVE
Address
FUNCTION
Byte
count
Data
Hi
Data
Lo
CRC
Lo
CRC
Hi
01H
03H
02H
00H
00H
B8H
44H
Request Data Frame ex: Read 10 consecutive data points
SLAVE
Address
FUNCTION
Starting
Address Hi
Starting
Address Lo
No. of Word
Hi
No. of Word
Lo
CRC
Lo
CRC
Hi
01H
03H
00H
00H
00H
0AH
C5H
CDH
Response Data Frame
SLAVE
Address
FUNCTION
Byte
count
Data(1)
Hi
Data(1)
Lo
…
…
Data(10)
Hi
Data(10)
Lo
CRC
Lo
CRC
Hi
01H
03H
14H
00H
00H
…
…
01H
00H
--
--
二、 Writed by Function 06H (Preset Single Register)
Request Data Frame
SLAVE
Address
FUNCTION
Code
Starting
Address Hi
Starting
Address Lo
Preset
DATA Hi
Preset
DATA Lo
CRC
Lo
CRC
Hi
01H
06H
00H
05H
00H
01H
58H
0BH
Response Data Frame
SLAVE
Address
FUNCTION
Code
Starting
Address Hi
Starting
Address Lo
Preset
DATA Hi
Preset
DATA Lo
CRC
Lo
CRC
Hi
01H
06H
00H
05H
00H
01H
58H
0BH
 ADDRESS TABLE **Address number are Hexadecimal
CM1-VA/CM1-PR/CM1-TR
 User Level
Name
Address
Range
Explain
Initial
Write/Read
Note
PV
0000h
-1999~9999
Present Value
R
min
0001h
-1999~9999
The Minimum of PV
0
R
max
0002h
-1999~9999
The Maximum of PV
0
R
m.rst
0003h
0~1
Clear Max/Min of PV 0:NO 1:YES
0
R/W
 Engineer Level
【Input Group】
Name
Address
Range
Explain
Initial
Write/Read
Note
pVdp
0005h
0~3
PV Decimal Point
0: 0000 1: 000.0 2: 00.00 3: 0.000
0
R/W
lOsc
0006h
-1999~9999
Low Scale
0
R/W
hIsc
0007h
-1999~9999
High Scale
9999
R/W
lOcut
0008h
-1999~9999
Low Cut
0
R/W
avg
0009h
1~99
Average
5
R/W
Mavg
000Ah
1~99
Moving Average
8
R/W
Dfilt
000Bh
1~99
Digital Filter
8
R/W
Pcode
000Ch
0000~9999
Pass Code
1000
R/W