Differential 5V Signal Input Directly, Encoder Counting 2-Channel Independent Di High-Speed Counter

Product Overview:
The WJ157 product realizes signal acquisition between sensors and hosts, used to decode encoder signals.
The
WJ157 series products can be applied in RS-485 bus industrial automation control systems, automated machine tools,
industrial robots, three coordinate positioning systems, displacement measurement, stroke measurement, angle
measurement, speed measurement, flow measurement, product counting, and more.
The product includes signal acquisition, pulse signal capture, signal conversion, and RS-485 serial communication.
Each serial port can connect up to 255 WJ157 series modules, and the communication method adopts ASCII code
communication protocol or MODBUS RTU communication protocol. The baud rate can be set by code and can be hung
on the same RS-485 bus as control modules from other manufacturers, making it easy for computer programming.

Since: 2011
Specialty: The company's main products include analog acquisition modules, signal isolators/conversion modules, and signal transmitters
Capacity: Produce 10000 per month
Advanced Features:
Switching to TCP/network/remote IO module, Modbus RTU to TCP, RS232/485 to Ethernet, analog signal (current/voltage/thermistor/frequency/displacement/speed/pulse) isolation transmitter, mV differential signal amplifier, isolation amplifier, micro power DC-DC module power supply, etc

The WJ157 remote I/O module can be used to measure 1 differential encoder signal or set as 2 independent differential
counters.
1, Signal input
One 5V differential encoder signal input or two independent 5V differential counters.
2, Communication Protocol
Communication interface: 1 standard RS-485 communication interface.
Communication Protocol: Supports two protocols, the character protocol defined by the command set and the
MODBUS RTU communication protocol.
The module automatically recognizes communication
protocols and can achieve network communication with various brands of PLCs, RTUs, or computer
monitoring systems.
Data format: 10 digits.
1 start bit, 8 data bits, and 1 stop bit.
No verification.
The communication address (0-255) and baud rate (2400, 4800, 9600, 19200, 38400, 57600, 115200bps) can be set;
The communication network can reach a maximum distance of 1200 meters and is connected through
twisted pair shielded cables.
High anti-interference design of communication interface, ± 15KV ESD protection, communication response time
less than 100mS.
3, anti-interference
Parity check can be set as needed.
There is a transient suppression diode inside the module, which can effectively
suppress various surge pulses, protect the module, and the internal digital filter can also effectively suppress power
frequency interference from the power grid.

(Typical @+25 ℃, Vs is 24VDC)
Input type: 5V differential signal input.
Differential signal range ± 200mV~± 7V.
The frequency range is 0-50KHz.
Encoder count range -2147483647 ~+2147483647
DI counter range 0~4294967295
Input resistance: 30K Ω
Communication: RS-485 standard character protocol and MODBUS RTU communication protocol
Baud rates (2400, 4800, 9600, 19200, 38400, 57600, 115200bps) can be selected by software
The address (0-255) can be selected by software
Communication response time: 100 ms maximum

Q: How to contact you?
A: Please contact us via email or online customer service

A: Guaranteed 72-hour express production