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PDF ISOADA08 Data sheet ( Hoja de datos )
| Número de pieza | ISOADA08 | |
| Descripción | 8-Channel Isolated 4-20mA to RS485 Converter | |
| Fabricantes | Shenzhen Sunyuan | |
| Logotipo |  |
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ISOAD A08
Multi-channel 4-20mA Data Acquisition Module,
RS485/232 Output, ASCII Command Set or Modbus RTU
Channel to Channel High Isolation
ISOAD is designed for sensor-to-host data acquisition, suit for collecting
analog signal for detection or controling of remote equipment. Using
the latest passive isolation technology, signal channels are isolated to
each other and the anti-interference capability is greatly enhanced.
The device includes power supply isolation, channels' isolation, A/D
converter and RS-485 module. Each serial port can transfer a maximum
of 255 ISOAD A08 Series modules support two types of communication
protocol, command set and MODBUS RTU. The Command set is
compatible with the ADAM modules. Buad rate can be set by codes, can
work with modules made by other manufacturer.
All the configures and protocol info are stored in EEPROM.
ISOAD A08 Series follow industry-standard design, manufacture, each
channel / output /power supply bear 3000VDC isolation voltage.
Operating temperature range - 45 ℃ ~ +80 ℃.
y Reliable Isolated Signals
Up to 8 channel Isolation, ensure that no disturbance happen between them.
y High Accuracy
Distortion < 0.05%
y Flexible Power Supply
Universal Power Supply: 8~50VDC
y Multi-port Isolation
The design and high isolation level (3 kV) provides protection for service personnel and
downstream devices against impermissibly high voltage
y Flexible Config
Program Calibration
Pre-defined ASCII protocol or Modbus-RTU. Choose by codes when use.
0~255 Address
Baud rate: 300、600、1200、2400、4800、9600、19200、38400bps, choose when use
y Easy to use
Compact DIN rail Mounting
y Safe
±15KV ESD Protection to Ports.
ANSI/IEEE C37.90.1-1989 Momentary protection
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Datasheet Ver2.0
1 page  
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ISOAD A08
Datasheet Ver2.0
Initialization:
Using with RS485, all ISOAD A08 modules should be assigned with unique address (00~FF). However all modules have
same default setting in factory:
Address: 01
Baud rate: 9600bps
Checksum: disabled
So users have to set new and unique addresses for different modules when implement them into the RS485 network.
After linking the module with power supply and RS485 cable, use commands to change the module’s address. This job
is done one module by one module. Users can change Baud rate, Check sum and protocol. Enter default mode to make
these changes.
To enter default mode, first short link PIN Config and PIN GND, then connect power supply. In this mode, orriginal
config is:
Address: 00
Baud rate: 9600bps
Checksum: disabled
Now it is ready to change settings by commands. If users are going to use MODBUS RTU, please refer to detail
descriptions later.
Command Set:
Every command is used of a series characters,such as leading code,address ID,command,checksum, end symbol(cr).
Except “**” synchronous command, commands have effects on one module each time.
Command format: (Leading Code)(Addr)(Command)[data][checksum](cr)
(Leading Code) is the first letter of command. All commands need a leading code.such as:%,$,#,@,...
1 Character
(Addr) is module address code, default value range is 00～FF (hexadecimal), 2 Characters
(Command) represents command code or variable value Variable Length
[data] some output command need data Variable Length
[checksum] represents optional parameters,only need it when checksum is enabled. 2 Characters
(cr) terminating character, value is 0x0D
1- character
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Response:! !AAXY(cr)
command is valid
?AA(cr) command is invalid or nonlicet operation
! delimiter character which indicates a valid command.
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? delimiter character which indicates a invalid command.
AA represents input module address
XY bit 3~0 of X represent Channel 7~4
bit 3~0 of Y represent Channel 3~0
1: enable 0: disable
(cr) terminating character, carriage return (0Dh)
There is no response if the module detects a syntax error or communication error or if the specified address does not
exists.
Example: Command $186 (cr)
Response !18FF (cr)
0xFF is 1111 1111, means all channels are enabled.
10、Choose Protocol
Description: Choose ASCII command set or MODBUS RTU as operation protocol
Syntax: $AAPV(cr)
$ delimiter character
AA module address, (range 00-FF) represents the 2-character hexadecimal
P command code
V Protocol code. 0: ASCII command set; 1: MODBUS RTU
(cr) terminating character, carriage return (0Dh)
Response:! !AA (cr)
command is valid
?AA(cr) command is invalid or nonlicet operation
! delimiter character which indicates a valid command.
? delimiter character which indicates a invalid command.
AA represents input module address
(cr) terminating character, carriage return (0Dh)
There is no response if the module detects a syntax error or communication error or if the specified address does not
exists.
Example: Command $00P1(cr)
Response !00 (cr)
Choose MODBUS RTU
Input Range and Data Format:
Analog Input four data formats: 00：Engineering Units 01：% of FSR
10：Twos complement hexadecimal 11：ohms (only available for porducts made for thermal resistance)
Input Range
Data Formats
+F.S.
ZERO
Displayed
Resolution
Engineering Units
+20.000
±04.000
1uA
4~20mA
% of FSR
+100.00
±020.00
0.01%
Twos complement hexadecimal 7FFFFF
199999
1LSB
Engineering Units
+20.000
±00.000
1uA
0~20mA
% of FSR
+100.00
±000.00
0.01%
Twos complement hexadecimal 7FFFFF
000000
1LSB
Example:
Input Range:±20mA,Output:4 -20mA
command
#01(cr)
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| PDF Descargar | [ Datasheet ISOADA08.PDF ] | |
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