Datasheet

Programming PIC Microcontrollers in BASIC - mikroElektronika
Prototype sub procedure RS485master_read(dim byref data as byte[5])
Description Master receives any message sent by Slaves. As messages are multi-byte, this procedure must be called for each
byte received (see the example at the end of the chapter). Upon receiving a message, buffer is filled with the
following values:
● data[0..2] is actual data
● data[3] is number of bytes received, 1..3
● data[4] is set to 255 when message is received
● data[5] is set to 255 if error has occurred
● data[6] is the address of the Slave which sent the message
Procedure automatically sets data[4] and data[5] upon every received message. These flags need to be cleared
repeatedly from the program.
Note: MCU must be initialized as Master in 485 communication to assign an address to MCU
Example
RS485Master_Read(dat)
5.2.14.3 RS485Master_Write – Sends message to Slave
Prototype
sub procedure RS485Master_Write(dim byref data as byte[2], dim datalen as
byte, dim address as byte)
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