● eight channels of PNP switch input and eight channels of PNP switch output
● the input level status can be read through RS-485 / 232 interface
● output state can be set through RS-485 / 232 interface
● signal input, output and power supply are not isolated
● wide power supply range: 8 ~ 32vdc
● High reliability, convenient programming and easy application
● standard din35 guide rail installation, convenient for centralized wiring
● user programmable module address, baud rate, etc
● support Modbus RTU communication protocol and automatic identification protocol ● low cost, small volume, modular design
● overall dimension: 120 x 70 x 43mm
● level signal measurement, monitoring and control
● RS-485 remote I / O, data acquisition
● intelligent building control, security engineering and other application systems ● RS-232 / 485 bus industrial automation control system
● industrial field signal isolation and long line transmission
● equipment operation monitoring and control
● sensor signal measurement
● acquisition and recording of industrial field data
● switch signal acquisition
Wj68 product realizes the signal acquisition and control between the sensor and the host, which is used to detect the switch signal or control the operation of the equipment. Wj68 series products can be used in RS-232 / 485 bus industrial automation control system, switch signal measurement and control, high and low level signal measurement and output, industrial field signal isolation and long-term transmission, etc.
The products include power conditioning, switching value acquisition, switching value output and RS-485 serial communication. Each serial port can be connected with 255 wj68 series modules at most. The communication mode adopts ASCII code communication protocol or Modbus RTU communication protocol. The baud rate can be set by code. It can be hung on the same RS-485 bus with other manufacturers' control modules, which is convenient for computer programming.
Wj68 series products are intelligent monitoring and control system based on single chip microcomputer. All configuration information such as address, baud rate, data format, verification and status set by users are stored in EEPROM.
Wj68 series products are designed and manufactured according to industrial standards, with no isolation between signal input and output, strong anti-interference ability and high reliability. Operating temperature range - 45 ℃ ~ + 85 ℃.
Wj68 remote I / O module can be used to measure eight channels of PNP switching signal, and has eight channels of PNP switching output.
1. On off signal input and output 8-way switch value signal input can be connected to dry contact and wet contact, please refer to the wiring diagram for details; 8-way switch value PNP signal output, the output voltage is equal to the power supply voltage, the maximum output current is 100mA, pay attention that the output cannot be overloaded, otherwise the output channel will be burned.
2. Communication protocol Communication interface: one standard RS-485 communication interface or one standard RS-232 communication interface, which shall be indicated during ordering and selection. Communication protocol: support two protocols, character protocol defined by command set and Modbus RTU communication protocol. The module automatically identifies the communication protocol, and can realize network communication with various brands of PLC, RTU or computer monitoring system. Data format: 10 bits. 1 start bit, 8 data bits and 1 stop bit. The communication address (0-255) and baud rate (2400, 4800, 9600, 19200, 38400, 57600, 115200bps) can be set; the maximum distance of the communication network can reach 1200 meters, which is connected by twisted shielded cable. High anti-interference design of communication interface, ± 15kV ESD protection, communication response time less than 100ms.
3. Anti interference Checksums can be set as needed. There are transient suppression diodes in the module, which can effectively suppress various surge pulses and protect the module.