SeriesDigital Module
DI/DO points40DI
COM PortBuilt-in 1*RS485
Remote I/O moduleSupported
40 channels digital input, can be used as the extension module for any types of PLC host; With the RS485 communication, it can also be used as remote IO; When a extension module hanging at the back of the host through the parallel bus, it can be powered by the inner 24VDC on the host; It must be powered by external 220VAC when capacity of the inner 24VDC supply is insufficient; When the module was used as remote I/O through serial bus, it must be powered by external 220VAC supply.
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H40DI2220V AC40

Terminal wiring diagram


Product DI specification

ItemDigital Input DI
Input signalNon-voltage contact or NPN/PNP contact
Action drivingON: 3.5 mA above OFF: below 1.5 mA
Input impedanceAbout 4.3KΩ
Input maximum current10mA
Response timeDefault 6.4ms,Configurable 0.8~51.2ms
Isolation modeEach Channel optical isolation
Input indicationLED light means ON, dark means OFF
Power supplyPLC internal power supply: DC power(sink or source)5.3mA@24VDC

Digital input (DI) wiring diagram

Haiwell Industry Automation

CR NumberFunction Declare
00H (Read only)The low byte is the module code, and the high byte is the module version number.
01HCommunication address
02HCommunication protocols:The low 4-bit of the low bytes: 0 - N,8,2 For RTU1 - E,8,1 For RTU
2 - O,8,1 For RTU
3 - N,7,2 For ASCII4 - E,7,1 For ASCII5 - O,7,1 For ASCII6 - N,8, 1 For 
The high 4-bit of the low bytes: 0 – 24001 – 48002 – 96003 – 192004 – 38400
5 – 57600
6 - 115200
03H~06HExtend module name
07H~08HDefault IP address:
09~0AH (Read only)Reserve
0BHHigh byte subnet mask (b3~b0,1 indicates 255, 0 indicates 0, for example, subnet mask, b3~b0=1110), low byte reserved
0CH~0EH (Read only)Reserve
0FH (Read only)Error code : 0-normal, 1-illegal firmware identity ,2-incomplete firmware, 3-system data access
 exception, 4-No external 24V power supply
10H~4FH (Read only)DI channel 1~64 input value
50H~8FHDO channel 1~64 output value
90HFiltering time of DI ms, 0 - 0.81 - 1.62 - 3.23 - 6.44 - 12.85 - 25.66 - 51.2
91H~9FH (Read only)Reserve