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Main power: 100-240 vAC 
Total I/O:  30 point
Total input:  24 Point digital
Total output: 16 Point digital
Type output: Transistor
Total high speed input:  6 Point
Total high speed output: 3 Point

High-speed output frequency:  100kHz per channel(Max.)

High-speed Function
X0 to X5 can realize the function with high-speed counting, interrupt and pluse capture,etc.
The maximum frequency of the X0 to X1 port counting up to 100kHz.
The maximum frequency of the X2 to X5 port counting up to 10kHz
The maxinum frequency of the X2 to X5 port counting up to 100kHz (The model of 32 points,64points,80 points and 128 points)
Output common ports: Each group shared a common port, there is insulated gap between the groups

Common connection terminal: Only a common terminal  S/S (SINK or SOURCE)
Note: S/S connecting to 24V+ or COM determines the SINK or SOURCE input mode, the selection is effective to all the input points’ signals in main unit.

Circuit Voltage Less than AC250V and DC30V DC5V to DC24V
Circuit Insulation Relay Mechanical Insulation light coupling Insulation
LED When the relay output contacts close, the LED light is on.
When the light coupling is drived,the LED light is on.

ON response delay 20 msec Max.
OFF response delay
20 msec Max.
High speed output: 10μs
Others: 0.5msec

Perfect design, high reliability and durability;
Supporting various programming environments and flexible combinations
High performance and large capacity CPU;
Powerful secrecy performance;
High speed pulse, flexible I/O functions;
Built in communication ports and protocols;
Rich expansion modules;
Satisfying customers’ special design requirements

1 Main module: Built-in CPU, power supply, I/O and the programmable controller host with program memory, Various expansion devices can be connected.
2 Expansion module: Receive I/O modules from the main module. Built-in connection cables.Max point of I/O is up to 256 which can be connected up to eight special expansion modules.
3 Expansion Card: Built-in programmable controller, using for function expansion devices.
Not occupy I/O points, One expansion card

Building-in large program memory space without an external extension memory card, it can up to 24K steps.
Large-capacity power-supply, it can directly provide power to user sensors, HMI Systems, relays, etc.
It provides high-speed multi-channel and high frequency I/O ports as well as excellent operation and positioning control functions

Building-in two independent communication ports, and MODBUS master and slave communication protocols,
Comprehensive encryption features to protect user’s intellectual property rights.
Supporting up to 128 programs and 21 sub-interrupt subroutines
Fast user-program execution speed.


Operation control mode Circular scan mode and interrupting instruction I/O control mode
Batch processing method (when END instruction is executed), there is an I/O immediate refresh instruction
Programming language Ladder diagram (LD), instruction list (IL) and sequential function chart (SFC)
Max. storage capacity 24K steps,(including file registers, max. 24K)

Basic sequence Control/ step-ladder diagram
27 Sequential control instructions, 2 step-ladder diagram instructions

1. Cover plate
2. Power supply, auxiliary power supply and removable terminal for input signal
3. LEDs for indicating the input status
4. LEDs for indicating the input status
PWR:Power LEDs  
RUN:Operating LEDs (Fashing during normal running)
BAT LEDs for Battery low-voltage
ERR  Error LEDs
5. Mounting screw holes
6. Interface cover for extended module Buckle for two DIN rail mounting
7. LEDs for indicating output status
8. Removable terminal for input signal
9. Download port for user program
10. Special function adapter plate knock-down hole (It should be cut down before the installation of special function adapter board)
11. RS485 communication port terminals
12. Special function extended card and special function adapter board interface
13. System program download port (Do not operate for non-professional)
14. Switching jumper of COM0 communication port protocol (Mounting short block refers to COM0 for download, monitoring protocol, removing the short block indicates that the user can program COM0 to other protocols, as shown in the H2U series of PLC communication manual.
15. Battery socket BAT (the polarity can not be reversed)
16. Wafer Battery (Use manufaturer special Battery)
17. Special function extended card and special function adapter board fixed bolts.
18. RUN/STOP switch
19. User program download port COM0


 Communication Interface Definition
The main PLC unit provides two communications ports,COM0 and COM1.COM0 has standard RS422 and RS485 modes, which is determined by JP0 jumper. If insert the jumper, it is just the mode for RS422.If the jumper is disconnected, it is the compatibility modes for RS485/422, the terminal interface is Mini-DIN8 socket.COM1 is RS485 type defaultly,the user can connect it with other device just via twisted-pair wires.
There are two modes via the connection of COM0, PLC and computer or touch screen or other devices.
Mode 1 (connect JP0): The PLC side is RS422, the PC side is USB.So the PC is connected to the PLC COM0 port via the dedicated USB download cable, model H2U-USB-CAB.
Mode 2 (connect JP0): The PLC side is RS422, the PC side is RS232. The computer is connected to COM0 port via the dedicated serial port download cable and model H2U-232-CAB
COM1 (RS485 interface) is easy to to connect with other devices, user can be on-site wiring via twisted-pair wires,
Note: COM1 ports are supported only half-duplex communication mode.

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+ Plc prices (all models)

Editor's note: Friends Inovance H2U Series has been a model that has worked under the toughest conditions for many years with zero problems. However, it is now discontinued due to the release of a new series. We do not recommend the H2U products on our website for your new projects. It has now entered the spare part class.