Digital to Analog (D/A) Isolated Converter: ISO DAO Series RS232/RS485 Signal to Analog Signal Isolated D/A Converter Product Overview:
The ISO DAO series implements the host RS-485/232 interface signal isolation and conversion into standard analog signals for controlling remote devices. ISODA series products can be used in RS-232/RS-485 bus industrial automation control system, 4-20mA, 0-5V, 0-10V and other standard signal output, used to control the implementation of industrial equipment, control equipment and display instruments, etc. Wait.
Products include power isolation, signal isolation, linearization, D/A conversion and RS-485 serial communication. Each serial port can connect up to 256 ISODA series modules. The communication mode adopts ASCII code communication protocol or MODBUS RTU communication protocol. The instruction set is compatible with ADAM module. The baud rate can be set by code and can be linked with other manufacturers' control modules. The RS-485 bus facilitates computer programming.
ISODA series products are intelligent monitoring and control systems based on single-chip microcomputer. All user-defined configuration values, address, baud rate, data format, checksum and other configuration information are stored in non-volatile memory EEPROM.
ISODA series products are designed and manufactured according to industrial standards. The signal output/communication interface is isolated and can withstand 3000VDC isolation voltage. It has strong anti-interference ability and high reliability. Operating temperature range - 45 °C ~ +80 °C.
ISO DAO Series Product Block Diagram
Brief introduction of ISODA function:
ISO DOA signal isolation D / A conversion module can be used to output a voltage or current signal, can also be used to output two common ground current or voltage signal.
1, analog signal output
With 12-bit output accuracy, all signal output ranges have been calibrated before leaving the factory. In use, the user can also easily calibrate their own programming.
The specific current or voltage output range depends on the product selection. When outputting two signals, the two output selection must be the same.
2, communication protocol communication interface: 1 standard RS-485 communication interface or 1 standard RS-232 communication interface, specify when ordering.
Communication protocol: Supports two protocols, the character set defined by the command set and the MODBUS RTU communication protocol. It can be programmed to use that communication protocol to enable network communication with a variety of brands of PLCs, RTUs or computer monitoring systems.
Data format: 10 bits. 1 start bit, 8 data bits, 1 stop bit.
The communication address (0~255) and baud rate (300, 600, 1200, 2400, 4800, 9600, 19200, 38400bps) can be set; the communication network can reach a maximum distance of 1200 meters and is connected through a twisted shielded cable.
Communication interface high anti-jamming design, ±15KV ESD protection, communication response time is less than 100mS.
3, anti-jamming can be set according to the need for checksums. There are transient suppression diodes inside the module, which can effectively suppress various surge pulses, protection modules, internal digital filtering, and can also well suppress power frequency interference from the power grid.
Features:
â— Low-cost, small-sized modular design â— RS-485/232 interface, isolated and converted to standard analog signal output â— Analog signal output accuracy better than 0.2%
â— can be programmed to calibrate the output accuracy of the module â— isolation between the signal output / communication interface voltage 3000VDC
â— Wide power supply range: 8 ~ 50VDC
â— High reliability, easy programming, easy installation and wiring â— User programmable module address, baud rate, etc. â— Can be set to host to read ISO 4021 product data for remote acquisition â— Support Modbus RTU communication protocol
typical application:
â— Standard analog signal output â— Intelligent building control, security engineering and other application systems â— RS-232/485 bus industrial automation control system â— Industrial field control signal isolation and long-term transmission â— Equipment operation debugging and control â— Remote transmission of sensor signals and signal restoration â— Industrial field actuator data given â— Medical, industrial product development â— 4-20mA signal output
product model:
Selection example 1: Model: ISODA O1-485 indicates 4-20mA signal output, output is RS-485 interface selection example 2: Model: ISODA O4-232 indicates 0-5V signal output, output is RS-232 interface selection Example 3: Model: ISODA O7-232/485 indicates 0-±5V signal output, output is RS-232 or RS-485 interface (key selection)
Remark: When the communication interface is selected as 232/485, the default is RS-485 output. Users can select RS-485 output or RS-232 output through the internal key switch. Open the bottom cover of the product and take out the circuit board. Two button switches can be seen on the internal circuit board. None of them is RS-485 output. Both switches are pressed to output RS-232.
The ISO DAO series implements the host RS-485/232 interface signal isolation and conversion into standard analog signals for controlling remote devices. ISODA series products can be used in RS-232/RS-485 bus industrial automation control system, 4-20mA, 0-5V, 0-10V and other standard signal output, used to control the implementation of industrial equipment, control equipment and display instruments, etc. Wait.
Products include power isolation, signal isolation, linearization, D/A conversion and RS-485 serial communication. Each serial port can connect up to 256 ISODA series modules. The communication mode adopts ASCII code communication protocol or MODBUS RTU communication protocol. The instruction set is compatible with ADAM module. The baud rate can be set by code and can be linked with other manufacturers' control modules. The RS-485 bus facilitates computer programming.
ISODA series products are intelligent monitoring and control systems based on single-chip microcomputer. All user-defined configuration values, address, baud rate, data format, checksum and other configuration information are stored in non-volatile memory EEPROM.
ISODA series products are designed and manufactured according to industrial standards. The signal output/communication interface is isolated and can withstand 3000VDC isolation voltage. It has strong anti-interference ability and high reliability. Operating temperature range - 45 °C ~ +80 °C.
ISO DAO Series Product Block Diagram
Brief introduction of ISODA function:
ISO DOA signal isolation D / A conversion module can be used to output a voltage or current signal, can also be used to output two common ground current or voltage signal.
1, analog signal output
With 12-bit output accuracy, all signal output ranges have been calibrated before leaving the factory. In use, the user can also easily calibrate their own programming.
The specific current or voltage output range depends on the product selection. When outputting two signals, the two output selection must be the same.
2, communication protocol communication interface: 1 standard RS-485 communication interface or 1 standard RS-232 communication interface, specify when ordering.
Communication protocol: Supports two protocols, the character set defined by the command set and the MODBUS RTU communication protocol. It can be programmed to use that communication protocol to enable network communication with a variety of brands of PLCs, RTUs or computer monitoring systems.
Data format: 10 bits. 1 start bit, 8 data bits, 1 stop bit.
The communication address (0~255) and baud rate (300, 600, 1200, 2400, 4800, 9600, 19200, 38400bps) can be set; the communication network can reach a maximum distance of 1200 meters and is connected through a twisted shielded cable.
Communication interface high anti-jamming design, ±15KV ESD protection, communication response time is less than 100mS.
3, anti-jamming can be set according to the need for checksums. There are transient suppression diodes inside the module, which can effectively suppress various surge pulses, protection modules, internal digital filtering, and can also well suppress power frequency interference from the power grid.
Features:
â— Low-cost, small-sized modular design â— RS-485/232 interface, isolated and converted to standard analog signal output â— Analog signal output accuracy better than 0.2%
â— can be programmed to calibrate the output accuracy of the module â— isolation between the signal output / communication interface voltage 3000VDC
â— Wide power supply range: 8 ~ 50VDC
â— High reliability, easy programming, easy installation and wiring â— User programmable module address, baud rate, etc. â— Can be set to host to read ISO 4021 product data for remote acquisition â— Support Modbus RTU communication protocol
typical application:
â— Standard analog signal output â— Intelligent building control, security engineering and other application systems â— RS-232/485 bus industrial automation control system â— Industrial field control signal isolation and long-term transmission â— Equipment operation debugging and control â— Remote transmission of sensor signals and signal restoration â— Industrial field actuator data given â— Medical, industrial product development â— 4-20mA signal output
product model:
Selection example 1: Model: ISODA O1-485 indicates 4-20mA signal output, output is RS-485 interface selection example 2: Model: ISODA O4-232 indicates 0-5V signal output, output is RS-232 interface selection Example 3: Model: ISODA O7-232/485 indicates 0-±5V signal output, output is RS-232 or RS-485 interface (key selection)
Remark: When the communication interface is selected as 232/485, the default is RS-485 output. Users can select RS-485 output or RS-232 output through the internal key switch. Open the bottom cover of the product and take out the circuit board. Two button switches can be seen on the internal circuit board. None of them is RS-485 output. Both switches are pressed to output RS-232.