Descriptions

“32 channel relay serial control board”  is a new product instead of 16 channel relay control box.The relay is expanded and improved, improve the compatibility of the hardware interface.”Multi-function 32-channel relay control panel” Using the RS232 interface or USB interface (need USB-RS232 adatper) to communicate, but also can use RS485 bus for long-distance transmission, to ensure that any PC or laptop easy to use and also used in industrial remote control applications.

Hardware Description

• 32 channel highly reliable isolated 250 V 10 A relay output, each relay have open port and public point. Support 232 and 485 two kinds bus of communication .
• the microcontroller  on-board have hardware watchdog.
• 32 channel outputs have LEDs indication.
• PCB layout is reasonable.
• the power input filter perfect, capacitance enough.  Power supply and COM port are antistatic design,
  also have protection diode.
• the reliable communication protocol, program in agreement processing is very reliable,
  does not exist software communication failures.
• we provide PC DEMO software and include the source code.
• RS232 and RS485 supported, you don’t need to manually switch the mode, which port you want to use, just connect with it.
• RS485 terminals wiring is convenient and long distance.
• use 12 VDC external power supply, such as power supply damage, as long as change a new one.

Instruction on the safety and compatibility of the system

In the designing of the “32 Route Relay Serial Port Control Board”, the PC machine power and control system power parts have been completely separated, thus in common situations, no accidental conditions will damage the computer system. The 250V 10A large current relay has been applied, and each route of which can carry 2500W power load. During the PCB design, we have complete separate designs for the relay driven circuit and the MCU communication control system to increase the systematic reliability, maintenance and updating. The control board is suitable for the all kinds of WINDOWS operation systems, for instance: Win98，Windows NT, Windows 2000, Windows XP, Windows 2003, Vista, Win7…
We can provide DEMO project to users, including the functions controlled by the 32 Route Relay, and also the source codes of the Visual Basic (VB) project, it’s convenience for users to software development.

Software Development by yourself.

If the user needs to use his own software to control the relay, we can supply communication protocol interface for you, and you only need to send HEX bytes data to the serial port according to our data format. We will send the protocol documents by your email address.
The relay control board’s software in PC is controlled by a VB software, where the control board is connected to the computer through a serial port(RS232) cable. The serial port is set as “COM1″, “9600, N, 8, 1″.
The first checkbox in PC software window means the first relay on control board and the rest will follow.

How to control 32 Route Relay through the RS232 Serial Port:

The interface of the upper computer is shown in the following graph. Various parameters of
the serial port can be set up through the upper computer, and click the “set up” button later to
complete configuration.
The default configuration is Serial Port 1, Baud Rate 4800bps, 8-Bit Data, No Check Bit, Stop bit=1. If your communication serial port is not COM1, you can set your computer’s actual serial port number.

If there are 32 checkboxes in the picture, they correspond respectively to the control board, thus if you want to control someone relay, just check or cancel its checkbox. The control board has 32 LEDs , each of which corresponds respectively to one relay, indicating the ON or OFF of the relay currently.

RS232 Serial Port Communication Protocol:

The PC sends 7 bytes to RS232 port, the first byte is 0×10, indicating instructions; the second byte is 0 (which is for use in expansion and can be set aside if not in use); the third to the sixth bytes are for data sending, and the MCU executes instruction according to these bytes; the seventh byte is the ending codes. Every operation of relay ON or OFF will send 7 bytes to COM port, and some bit in one byte will be updated in the data to send instructions to the MCU for its operation.

How to control 32 Route Relay through the RS485 Serial Port

The interface of the upper computer is shown in the following graph. Various parameters of the
serial port can be set up through the upper computer, and click the “set up” button later to
complete configuration.
The default configuration is Serial Port 1, Baud Rate 4800bps, 8-Bit Data, No Check Bit, Stop bit=1. If your communication serial port is not COM1, you can set your computer’s actual serial port number.

The left window of the PC software can be selected with the control box number, i.e., the “Control Box 1, Control Box 2, Control Box 3, Control Box 4″ in the drop down box can correspond to the 2-bit address switch on the control panel respectively. Control Box 1 corresponds to the “00″ status on the dial switch; Control Box 2 corresponds to the “01″ status on the dial switch; Control Box 3 corresponds to the “10″ status on the dial switch; and Control Box 4 corresponds to the “11″ status on the dial switch. If you need to control someone control box , just select or cancel the checkbox. The 32 LEDs indicate 32 relays status. It’s convenient and fastly!

RS485 Serial Port Communication Protocol:

The PC sends 7 bytes to RS232 port, the first byte is 0×10, it’s indicating instructions; the second byte is address byte ; the third to the sixth bytes are for data sending, and the MCU executes instruction according to these bytes; the seventh byte is the ending codes. Every operation of relay ON or OFF will send 7 bytes to COM port, and some bit in one byte will be updated in the data to send instructions to the MCU for its operation.

OEM Personalized Customization Servic

In order to give customization to clients and meet their demand, we provide OEM customization
service for them. Our products have been made commonly currently and haven ‘t been attached
with brands, thus users are allowed to promote through OEM. These products have been independently
developed by our company in the industrial level quality that are assured for long-term use without
problems. Our company controls the core technology, allowed for detailed design, modification and
customization. Please contact with us before confirmation.

Packaging Details

•1 x 32 channel relay serial control board
•1 x serial line
•1 x 12 V power adapter

You can see more information and details in Chinese webpage:
http://www.hificat.com/relay_16/relay_32.html