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Product Name: DB9 Female/Male RS232 UART Switch Board DC 12V 232 Relay Module for PLC LED Motor
 
 
 
Package inlcuded:
 1 x DC 12V 2Channel RS232 Relay Board(DB9 Female/Male Interface)
 
   
Description: 
 
2 Channel DB9(Female /Male) RS232 Relay Module; 
 
Power input: DC 12V(8.5-13.5V).
 
PC Serial ports RS232 Control Relay;
 
Power indicator : LED lights;
 
Output indication : relay output with LED indicators,easy to see working status of the relay;
 
Communication protocol: UART protocol communication, baud rate 9600kpbs, 8 data bits, one stop bit, no parity. Each data frame contains eight bytes. Two-way data transmission.
 
Baud rate 9600kbps, 8 data bits, one stop bit, no parity. Each data frame contains eight bytes.
 
PCB Size : 71x47mm
Note: There are two types of DB9 interfaces.Female interfaces usually are common. Please choose the correct DB9 interface.
 
     
1 Control commands:
 
1. Reading status(reading the satus of the relay (on/off))
 
0x55  0x56  0x00  0x00  0x00  0x00  0x00  0xAB
 
2.Relay open (issue this command,Relay open,COM connect to NO)
 
Channel 1 : 0x55  0x56  0x00  0x00  0x00  0x01  0x01  0xAD
Channel 2 : 0x55  0x56  0x00  0x00  0x00  0x02  0x01  0xAE
 
 
3. Relay close (issue this command,Relay close,COM disconnect NO,and COM connect to NC)
 
Channel 1 : 0x55  0x56  0x00  0x00  0x00  0x01  0x02  0xAE
Channel 2 : 0x55  0x56  0x00  0x00  0x00  0x02  0x02  0xAF
 
 
4. Relay toggle(Relay status reversal,if COM connect to NO,this commands will Disconnect COM to NO and Reverse COM connect to NC,and vice versa)
 
Channel 1 : 0x55  0x56  0x00  0x00  0x00  0x01  0x03  0xAF
Channel 2 : 0x55  0x56  0x00  0x00  0x00  0x02  0x03  0xB0
 
 
5. Relay momentary(Relay COM connect to NO,disconnect after 200MS)
 
Channel 1 : 0x55  0x56  0x00  0x00  0x00  0x01  0x04  0xB0
Channel 2 : 0x55  0x56  0x00  0x00  0x00  0x02  0x04  0xB1
 
 
Once issue a command,will have a return fame,7th byte of return fame mean the satus of realy.
 
2 return command 
   
1.Return relay open(return this command,mean COM connect to NO)
 
Channel 1 :  0x33  0x3C  0x00  0x00  0x00  0x01  0x01  0x71
Channel 2 :  0x33  0x3C  0x00  0x00  0x00  0x02  0x01  0x72
 
 
2.Return relay close(return this command,mean COM disconnect NO , and COM connect to NC)
 
Channel 1 : 0x33  0x3C  0x00  0x00  0x00  0x01  0x02  0x72
Channel 2 : 0x33  0x3C  0x00  0x00  0x00  0x02  0x02  0x73
 
Instruction manual Please ask us after the purchase
 
Application
 
Remote control, remote measurement system; 
Wireless meter ;
Smart Home,Home Automation ,Wiser Home;
Access control  ;
Identification system ;
Data collection; 
IT household appliance ;
As a PLC expansion board
Intelligence household appliance;
Baby monitoring system;
 
Typial application :
 
 
DC 1-110V OR AC 85-265V control circuit,Wiring diagram below(Note:If not DC 12V load, need another DC 12V power supply). ''LOAD'' may be LED lights, fans, motors and other DC AC equipment
 
 
 
 
 
Test Software:(Only support win xp (32/62)  win 7 (32/62) Operating System)
 
 
 
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