Product Details:
Before using H2U series PLC, please read this manual carefully in order to use the products correctly. This manual mainly describes specifi cations, features and usage of H2U series PLC, and there are PLC instructions set summaries for easy reference. For both the user program development environment usage and programming methods of this product, please refer to our company’s “Auto-Shop programming software user’s Guide “,” H2U series PLC programming reference manual ” and ” H2U series communication manual”. Features of H1U Series Programmable Controller: Building-in large program memory space without an external extension memory card, it can up to 8K steps. User program and all the power-down devices can be permanent backup in the power-off status, and the realtime clock can keep at least 20 days in power-down situations without batteries (power-on time is longer than 5 minutes). Provide high-speedmulti-channel and high frequency I/O ports as well as excellent operation and positioning control functions. Integrate two independent communication ports, providing excellent communication protocols and MODBUS instruction, which is convenient for system integration. Comprehensive encryption features can protect users’ intellectual property rights. With powerful networking and support CAN-BUS.

• Range of motion and positioning control functions
• USB port
• Supports CANlink networking and Modbus communications
• Three separate communications ports
• Offers communications configuration function
• Large program memory for up to 8,000 steps
• Memory data automatically saves in case of power failure
• Real-time clock retained for one week after power failure with no need for battery
• High security encryption
• Multi-channel, high frequency I/O ports

Design Precautions:Provide a safety circuit on the outside of the PLC so that the whole system operates to ensure the safety even when external power supply trouble or PLC failure occurs. To be considered in the design includes:

• On the outside of the PLC, an emergency stop circuit, a protection circuit, an interlock circuit, or a positioning limit circuit may be necessary for preventing damage to the machine.
• Ensure the safe operation of equipment, please design external protection circuit and safety mechanics for the PLC output signals.
• When the PLC CPU detects the system abnormal, all outputs may be turned off. During the controller circuit failure, it may cause the output out of controlled. Design external circuits to ensure safe operations of the machine in such a case.
• When some sort of error occurs in a relay or transistor of the output unit, output may be kept on or off.
• PLC design is applied to the indoor electric environment, its power system-level should have lightning protection device, make sure that they will not lightning imposed on the PLC power input-side or signal input, control output terminal, avoid damage the device.

Installation Precautions:

• Do not use the PLC in the place of dust, oil smoke, conducting dust, corrosive gas, and combustible gas, exposure to the high temperature, dew, wind and rain, vibration and shock. Electric shock, fire, operator errors can also cause the product damage and deterioration.
• When processing for screw holes and wiring, do not make the metal fi lings and wires falling into the controller ventilation hole, this may cause a fi re, failure, and malfunction