Minebea Intec PR5900 - Reading and Writing Bits Directly

Action of the master Slave reaction
Write value in Write_Data (bytes 0-3).
Write function number to
Write_Value_Select.
Read data from Write_Data (bytes
0-3).
Set the Write_Active bit.
Wait until Write_Active has been set.
Write 0 in Write_Value_Select.
Reset the Write_Active bit.
8.2.2.3 Writing bits
In addition to the control bits in bytes 6/7, further bits can be set and, if necessary, reset
directly with Write_Value_Select.
To set bits 80 to 127, the corresponding function number is written to
Write_Value_Select (see Chapter 8.2.5).
To reset bits 80 to 89, the corresponding function number +128 (208 to 217) is written to
Write_Value_Select.
Action of the master Slave reaction
Writing the bit address as a function
number to Write_Value_Select.
The bit from Write_Value_Select is
set and the corresponding function
carried out.
Set the Write_Active bit.
Wait until Write_Active has been set.
Write 0 in Write_Value_Select.
Reset the Write_Active bit.
8.2.2.4 Reading bits
Reading individual bits which are not contained directly in the read window is only
possible with a corresponding function number and the data in Read_Data (Byte 0-3) of
the read window. In those bytes, the bits must be evaluated individually.
The procedure is the same as that described in Chapter 8.2.2.1.
8.2.3 Reading and writing bits directly
For reading status bits and for writing direct control bits, no procedure is required. The
general status bits are always provided and need not be requested. The direct control bits
are also available continuously.
5. Write 0 in byte 5 (Write_Value_Select).
Write_Active is reset.
Process Controller Maxxis 5 PR 5900 8 Fieldbus interface
Minebea Intec EN-350