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Product Name: 8CH DC 5V 12V 24V RS485 RS232 (TTL) Modbus RTU Control Module UART for Relay Switch Board PLC
 
  
Package inlcuded:
 1 x 5V/6-24V 8 Channel Multifunction RS485 Control Board for 1-8 CH Relay Module
 
Description: 
 
1: Operating Voltage : DC 5V(5V Version) / DC 6-24V(6-24 Version)
2: Operating Current : 10-15MA
3: ''open'' ''close''  ''Momentary'' ''Self-locking'' ''Interlock'' ''Delay'' 6 Commands
4: Two instruction-control mode : AT command and MODBUS command
5: Under the AT command ,the maximum delay is 9999 seconds
   Under the MODBUS command ,the maximum delay is 255 seconds
6 AT commands can be made serial HyperTerminal (serial assistant) Enter;
   MODBUS commands can be made serial HyperTerminal (serial assistant)  OR ''Modbus Poll'' Enter;
7 Under the MODBUS command mode, it can support up to 247 devices in parallel
8 With RS485 and RS232 (TTL) dual bus interface
9 Output control pins 8, 5V TTL level, low level (default) / high level output
10 Size: 45 * 30 * 15mm
11 Weight: 10g
 
 
 
Instruction manual Please ask us after the purchase
 
 
Application
  
Automated industry PLC
Relay Module
Smart Home,Home Automation ;
Identification system;
Motor FW & BW;
CCTV Camera PTZ Control; 
Security system;
LED dot matrix screen;
RS485 remote control;
 
Command mode selection :( figure above) M0 disconnect is MODBUS command mode. M0 Connect is AT command mode.
Output level selection : ( figure above) M1 disconnect is Low level output. M1 Connect is Hight level output
Slave ID: Different ''Sliver ID'' can be set by command, the maximum number is 247
Under the MODBUS command mode,the slave ID must be correct
command Description, Please refer to '' 8 Channel  Multifunction RS485 Module commamd''
  
  
Typical applications:
 
1 AT command mode (M0 Connect), in this mode can be through the serial HyperTerminal (serial assistant) enter a simple AT command control relay. AT command mode time up to 9999 seconds 
 
 
2 MODBUS command mode (M0 disconnect), you can control a variety of ways: Serial Hyper Terminal Control (need to manually add the CRC), Modbus Poll software control (software automatically add the CRC), PLC or MCU process control
It can control 1-8 channels 5V/6V/9V/12V/24V Relay Module
With RS485 interface and RS232 (TTL) interface
Version identification: 
The 6-24V version comes with a 78M05 chip, and the back of the PCB board is labeled 12/24V.                
The 5V version does not have a 78M05 chip, and the back of the PCB board is labeled as 5V.
Test Software(We offer a demo video):
  
Serial HyperTerminal:
  
Modbus Poll
 
 
 
 
 
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