SeriesAnalog Module
AI/AO points8AO
COM PortBuilt-in 1*Ethernet port+1*RS485 port
Remote I/O moduleSupported
The expansion module with Ethernet port also has all the functions of the expansion module of same type without Ethernet port, it also supports Haiwell cloud platform,can use Haiwell cloud to do remote programming for Haiwell PLC ,upload/download,firmware upgrade,self-diagnosis,monitor and debug. Easy for remote connection and monitoring the real-time data of the site.
  • Product Introduction
  • Technical Specification
  • File Download
S08AO-e24V DC
812 bitRS48593*95*82mm

Terminal wiring diagram


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 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 RTU       
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-Illegally firmware identity, 2-Incomplete firmware, 3-System data access
 exception, 4-No external 24V power supply
10HThe output value of channel 1
11HThe output value of channel 2
12HThe output value of channel 3
13HThe output value of channel 4
14HThe output value of channel 5
15HThe output value of channel 6
16HThe output value of channel 7
17HThe output value of channel 8
18HThe signal type of channel 1, note 2
19HThe signal type of channel 2, note 2
1AHThe signal type of channel 1, note 2
1BHThe signal type of channel 4, note 2
1CHThe signal type of channel 5, note 2
1DHThe signal type of channel 6, note 2
1EHThe signal type of channel 7, note 2
1FHThe signal type of channel 8, note 2
20HUse the engineering value mark, note 6
21HThe lower limit in engineering value of channel 1
22HThe lower limit in engineering value of channel 2
23HThe lower limit in engineering value of channel 3
24HThe lower limit in engineering value of channel 4
25HThe lower limit in engineering value of channel 5
26HThe lower limit in engineering value of channel 6
27HThe lower limit in engineering value of channel 7
28HThe lower limit in engineering value of channel 7
29HThe upper limit in engineering value of  channel 1
2AHThe upper limit in engineering value of  channel 2
2BHThe upper limit in engineering value of  channel 3
2CHThe upper limit in engineering value of  channel 4
2DHThe upper limit in engineering value of  channel 5
2EHThe upper limit in engineering value of  channel 1
2FHThe upper limit in engineering value of  channel 7
30HThe upper limit in engineering value of  channel 1
31HPower-off output mark, note 8
32HThe power-off output value of channel 1
33HThe power-off output value of channel 2
34HThe power-off output value of channel 3
35HThe power-off output value of channel 4
36HThe power-off output value of channel 5
37HThe power-off output value of channel 6
38HThe power-off output value of channel 7
39HThe power-off output value of channel 8
3AH (Read only)Channel indicator status, note 7 
3BH (Read only)Reserve
3CH (Read only)
3DH (Read only)
3EH (Read only)
3FH (Read only)
40H (Read only)
41H (Read only)
42H~4FH (Read only)


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