The WJ99 remote I/O module can be used to measure eight encoder signals, and can also be set as a 16 channel
independent counter or DI status measurement.
1,Signal input
8-channel encoder signal input or 16 channel DI independent counter, can be connected to dry and wet contacts.
Please refer to the wiring diagram for details.
Note: When used as an independent counter input for DI, channels A0~A7 are high-speed channels with a
frequency of up to 5MHz; Channels B0~B7 are low-speed channels with a maximum frequency of 20KHz.
2,Communication Protocol
Communication interface: RJ-45 network interface. The two indicator lights at the network port position, the Link
light (green light) stays on after the network cable is plugged in, and the Data light (yellow light) will
flash intermittently.
Communication protocol: Supports MQTT protocol and can connect to various MQTT servers such asAlibaba
Cloud, Tencent Cloud, Huawei Cloud, China Mobile IoT OneNET, private cloud, etc. MODBUS TCP
protocol can also be used to achieve industrial Ethernet data exchange.
It also supports communication protocols such as TCP/UDP/WebSocket.
Network cache: 2K bytes (for both sending and receiving)
Communication response time: less than 10mS.
3,anti-interference
Checksums 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
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