Haiwell PLC User Manual & Application Case

www.haiwell.com Haiwell PLC - Analog Module Application Case
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Host PLC writes the 8-channel analog output values of S08AO by Modbus write instruction MODW, the start address is
10H(hexadecimal), that is, the decimal value is 16. When writing successfully, M1 is ON, the 8-channel values which will
be written into are stored in V1000-1007.
In this example, for the channel 1 of analog output, check the use of engineering value, the lower limit value is 0, the
upper limit value is 3600, indicating that the valve opening is 0.0~360.0 ° , this case V1000=500, so the first output
channel value is 500, that is, the valve opening is 50.0°.
2.8. Remote IO application example(Ethernet mode): PLC read and write each channel input and output values of S08XA-e
1 Hardware wiring: PLC and module Ethernet port connected with a shielded network cable, they can be connected
directly or through the switch.
2
Modbus address: From the above S08XA-e analog module CR parameter table shows that the input values of module
input channel 1 ~ 4 are stored in the address 10H ~ 13H. The output values of module output channel 1-4 are stored in
2AH ~ 2DH.
3 PLC program: Read the 4-channel measurements of remote Ethernet module S08XA-e and write the 4-channel output
values of S08XA-e, if the module IP address is 192.168.1.112, station number address is 1, the read results are stored
in the V0 ~ V3, the values to be written are stored in the register V10-V13. As follows:

Haiwell PLC Specifications

General

Series	Haiwell PLC
Programming Language	Function Block Diagram
Communication Ports	RS232, RS485, Ethernet
Digital Inputs	Varies by model (e.g., 8, 16, 32)
Digital Outputs	Varies depending on the model (e.g., 8, 16)
Analog Inputs	Varies by model (e.g., 4, 8)
Analog Outputs	Varies by model (e.g., 2, 4)
Power Supply	24V DC
Real-Time Clock (RTC)	Yes
Expansion Modules	Yes, supports various expansion modules for I/O, communication, and special functions
Input Voltage	24V DC
Data Memory	Varies depending on the model
Humidity Range	5% to 95% (non-condensing)