Control Systems
OBR Control Systems Inc
OBR Control Systems Inc
Telephone : +1 (248) 672-3339
32233 West 8 Mile Road
www.obrcontrolsystems.com
Livonia, Michigan 48152
USA
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Section
Set Points
gives access to a linearization table having 32 breakpoints. Any number
of breakpoints can be used; a 2-point calibration of a pressure sensor only requires two.
If a sensor A/D value is below the minimum breakpoint, the minimum value is applied.
If a sensor A/D value is above the maximum breakpoint, the maximum value is applied.
The “In Value” is entered in bits.
Leaving all breakpoints at 0 (zero), channel values are displayed in bits (for channels sent
as
byte
or
word
) or in a decimal value (if the channel is transmitting
bit
values).
CAN 1 and CAN 2 can each handle up to 64 individual identifiers, while CAN 3 and CAN 4 can
handle a maximum of 5 individual identifiers each plus the PC tool.
CAN identifiers can be individually selected, and they do not have to be arranged in special
groups. The lower the address number, the higher the data priority.
CAN channels can contain switch status, using up to 8 individual bits in a byte, 8 bit data channels
or 16 bit data channels.
Inputs can be read as the status of a single byte, two bytes or by each individual bit in each byte or
combinations hereof.
An 8 bit data channel reads data in the range between 0..255 and uses 1 byte.
A 16 bit data channel reads data in the range between 0..65535 and uses 2 bytes.
16 bit channels can be arranged as either Big Endian (Motorola format) or Little Endian (Intel
format).
When configured as Big Endian the two bytes are arranged as [(MSB);(LSB)], for example byte 0 is
“High” (MSB) and byte 1 is “Low” (LSB).
When configured as Little Endian the two bytes are arranged as [(LSB);(MSB)].
Bit management within each of the 8 bytes in an identifier is available.
Each byte contains 8 bits which are numbered this way:
Byte 0 = 0..7 bits
Byte 1 = 8..15 bits
Byte 2 = 16..23 bits
Byte 3 = 24..31 bits