SeriesAnalog Module
AI/AO points2AI/2AO
COM PortBuilt-in 1*RS485
Remote I/O moduleSupported
2 channels analog input, 2 channels analog output, A/D hardware conversion accuracy: 12 bits; Support 6 types of signals:[4,20]mA、[0,20]mA、[1,5]V、[0,5]V、[0,10]V、[-10,10]V; It can be used as the extended module for any types of PLC host; With the RS485 communication port, it can also be used as remote IO; When a extended module hanging at the back of the host though the parallel bus, it can be powered by the inner 24VDC on the host; It must be powered by external 24VDC when capacity of the inner 24VDC power supply is insufficient; When the module was used as remote I/O through serial bus, it must be powered by external 24VDC supply.
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S04XA24V DC2212 bitRS48570*95*82mm

Terminal wiring diagram

Haiwell Industry Automation

Product AI specification

ItemVoltage InputCurrent Input
Input range-10V ~
0V ~
0V ~
1V ~
0 ~
4 ~
Input impedance6MΩ250Ω
Max input range±13V±30mA
Input indicationLED light means normal, dark means break OFF
Response time5ms/4 Channel
Digital input range12 bits, Code range: 0~32000(H series module 16 bits A/D convert)
Precision0.2% F.S
Power supplyMPU use internal power supply, Extension module use external 
power supply 24VDC ±10% 5VA
Isolation modeOpto-electric isolation, Non-isolation between Channel ,between analog and digital
 is opto-electric isolation
Power consumption24VDC ±20%,100mA(Max)

Analog input (AI) wiring diagram

Haiwell Industry Automation

Product AO specification

ItemVoltage OutputCurrent Output
Output range-10V ~
0V ~
0V ~
1V ~
0 ~
 Output load impedance1KΩ@10V≥500Ω@ 5V≤500Ω
Output indicationLED light means normal
Drive capability10mA
Response time3ms
Digital output range12 bits, Code range: 0~32000(H series module 16 bits D/A convert)
Precision0.2% F.S
Power supplyMPU use internal power supply, Extension module use external 
power supply 24VDC ±10% 5VA
Isolation modeOpto-electric isolation, Non-isolation between Channel, between analog
 and digital is opto-electric isolation
Power consumption24VDC ±20%,100mA(Max)

Analog output (AO) 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 protocol: The low 4-bit of the low byte: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 RTU   
The high 4-bit of the low byte: 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 (Read only)The input value of channel 1
11H (Read only)The input value of channel 2
12HThe signal type of input channel 1, note 2
13HThe signal type of input channel 2, note 2
14HUse the engineering value mark, note 6
15HThe lower limit in engineering value of input channel 1
16HThe lower limit in engineering value of input channel 2
17HThe upper limit in engineering value of input channel 1
18HThe upper limit in engineering value of input channel 2
19HThe sampling frequency of input channel 1
1AHThe sampling frequency of input channel 2
1BHzero point correction value of input channel 1
1CHzero point correction value of input channel 2
1DH (Read only)Channel 1~2 input disconnection alarm, note 5  
1EHThe output value of output channel  
1FHThe output value of channel 2
20HThe signal type of output channel 1, note 2
21HThe signal type of output channel 2, note 2
22HUse the engineering value mark, note 6
23HThe lower limit in engineering value of output channel 1
24HThe lower limit in engineering value of output channel 2
25HThe upper limit in engineering value of output channel 1
26HThe upper limit in engineering value of output channel 2
27HThe power-off output mark, note 8
28HThe power-off output value of output channel 1  
29HThe power-off output value of output channel 2
2AH (Read only)The output channel indicator, note 7
2BH~2FH (Read only)Reserve


1. Sampling frequency:0 - 2 times、1 - 4 times、2 - 8 times、3 - 16 times、4 - 32 times、5 - 64 times、6 - 128 times、7 - 256 times

2. Signal type:0 - [4,20]mA、1 - [0,20]mA 、2 - [1,5]V、3 - [0,5]V、4 - [0,10]V、5 - [-10,10]V

3. The signal type of thermal resistance:0 - Pt100、1 - Pt1000、2 - Cu50、3 - Cu100

4. The signal type of thermocouple:0 - S、1 - K、2 - T、3 - E、4 - J、5 - B、6 - N、7 - R、8 – Wre3/25、9- Wre5/26、10 - [0,20]mV、11 - [0,50]mV、12 - [0,100]mV

5. Disconnection alarm:Each bit indicates 1 channel, 0-normal, 1-disconnection

6. Use the engineering value mark:Each bit indicates 1 channel, 0-No, 1-Yes

7. Channel indicator status:Each bit indicates 1 channel, 0-off, 1-on

8. Power-off output mark:Each bit indicates 1 channel, 0-No, 1-Yes

9. The output flag while power supply lost: each bits signify 1 Channel ,0-No,1-Yes