RS232/RS485 to analog signal (D/A converter)selection example:
Sample 1: Model:JSD DA-A02-485-IO4 RS-485 Interface,4-20mA signal
Sample 2: Model:JSD DA-A02-232-VO1 RS-232 Interface,0-5V signal
RS232/RS485 to analog signal (D/A converter )Features and
● Low cost, small size modular design
● RS-485/232 Interface, Analog signal acquisition, isolated output
● Output accuracy>0.2%
● Can be remotely reconfigured for modules accuracy
● Three-port isolation (input/output/power supply): 3000VDC /60s
● Wide operating power supply: 8 ~ 32VDC
● High reliability, easy programming and installation
● International standard DIN35mm rail mounting for easy centralized
● Can Program setting module address, baud rate , etc.
● Can set the host to read the JSD DA-A02 data to achieve remote
● Supports Modbus RTU
● RS-232/485 bus industrial automation control systems
● Industrial control signal isolation and long-term transmission
● Equipment operation Commissioning and control
● The sensor signal remote transmission and signal reduction
● Industrial field actuator data given
● Medical, industrial product development
● Intelligent building control, security engineering and other
● Standard analog signal output
● 4-20mA signal output
RS232/RS485 to analog signal (D/A converter ) General Description:
JSD DA-A02 series realize host RS-485/232 interface signal
isolation converted into a standard analog signal, to control the
remote device. JSD DA-A02 products can be applied to RS-232/485 bus
industrial automation control system,4-20mA /0-5V/0-10V standard
signal output, to control industrial site execution set equipment,
control equipment and display instrument. Products include power
supply isolation, signal isolation, linearization, D/A conversion
and RS-485 serial communication. Each serial interface can connect
up to 256 pieces JSD DA-A02 Series modules, communication using
ASCII code or MODBUS RTU communication protocol, and its
instruction set compatible with the ADAM modules, baud rate can
been set by the code, with other manufacturers control module hang
in the same RS-485 bus for easy programming.
JSD DA-A02 series products are based on SCM's intelligent
monitoring and control system, users set the calibration value,
address, baud rate, data format, checksum status, and configuration
information are all stored in nonvolatile memory EEPROM.
JSD DA-A02 products are according to industry standard design,
isolation between signal output / communication interface, can
withstand voltage 3000VDC, high anti-interference ability and
reliability. Operating temperature range is - 45 ~ +85°C.
JSD DA-A02 signal isolation D / A converter module can be used to
output one channel voltage or current signal, can also be used to
output two common ground current or voltage signal.
1. Analog signal output 12-Bit acquisition accuracy, all products
signal input range have been calibrated. In use, users also can
program calibration easily. About the specific current or voltage
input range, please see product selection. when need two channels
signal output, signal value must be the same.
2. Communication protocol
Communication Interface: one channel standard RS-485 communication
interface, or one standard RS-232 communication interface, specify
Communication Protocols: supports two protocols, characters
protocol of the command set defined and MODBUS RTU communication
protocol. Can be programmed using the kind of communication
protocol, can be achieved with PLC, RTU of many Brands or computer
monitoring system for network communication.
Data Format: 10 Bits. 1 start bit, 8 data bits, 1 stop bit.
Address: (0 to 255) and baud rate (2400, 4800, 9600, 19200, 38400
bps) can be set, the most long-distance about communication
networks is up to 1200 meters, through the twisted-pair shielded
cable. Communication interface of high anti-jamming design, ± 15KV
ESD protection, communication response time is less than 100mS.
3. Anti-jammingAccording to need to set the checksum. Module
internal has transient suppression diodes, can inhibit a variety of
surge pulse, protection module, and internal digital filter can
also be well suppressed from the grid frequency interference.