C Control The I Unit-M Advanced 5 Vdc Inputs / outputs 16 x digital I/Os / 8 x analogue or digital I/Os Program memory 2 198805 Datenbogen

 

The RF Object supports all basic functions for RF communication (based on the HT12 format) in an very 
easy manner. The RF Receiver/Transmitter connected to PORT 2 (RX) und PORT 3 (TX).  
The HT12 data format consists of a device address and a data byte reveived from (or transmitted to) a  FT12 
remote device.  Even Word sized values are accepted, RF.SEND/GET  will transfer 4 bytes for command 
and  8 bytes for address. 
 
 

  
    FORMAT: 
          11-10-09-08-07-06-05-04-03-02-01-00   DATA BIT 
          c3 c2 c1 c0 a7 a6 a5 a4 a3 a2 a1 a0   HT12 Format 
 
a = Address 
c = Command 
 
The RF MODULE expects a receiver connected at port 2 and the 
transmitter connected to port 3 

 
 
 
 
 
 
 
 
 
 
 
 
 
RF.INIT 
Activate the Object to get access to its registers for read/write operation. Close other Objects prior to open. 
 
Syntax: OBJECT.instruction 
 

 
RF.GET 
RF.SEND 
Access the I²C bus to read/write a binary value. 
 
Syntax: OBJECT.instruction Address,Data 
 
Address:  Variable or  constant which is send as address 
                at write access (SEND) 
                Variable, the received address is moved to at  read    
                access. Valid for word and byte size. 

                 
Data:      Variable or  constant which is send as data 
                at write access (SEND) 
                Variable, the received data is moved to at  read    
                access. Valid for word and byte size. 
 
 
Both values (address and data) will be read as 255 if no valid  data frame was received i.e if the receive 
buffer is empty. The receive buffer is set to 255 (address and data) if it has been read. 
 
The Data Buffer may contain random Values if the receiver put out noise data (i.e. is working with open 
Squelch / noise suppression)  
 
 
RF.OFF 
Close the Object prior to open any other Object. 
 
Syntax: OBJECT.instruction