C500BC061 Omron, C500BC061 Datasheet - Page 85

• Manufacturer Part Number: C500BC061
• Description: BACKPLANE
• Manufacturer: Omron

Specifications of C500BC061

• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Frame Checksum (FCS) Calculation
3-4
3-4-1
Note: in this example, CR (CHR$(13))
is not included in RESPONSE$.
Frame Checksum (FCS) Calculation
FCS Calculation Program Example
The Frame Checksum is 8-bit data converted into two ASCII characters. The
8-bit data is the result of an EXCLUSIVE OR sequentially performed between
each character, from the first character in the frame to the last character of the
text in that frame.
The following program is an example of how Frame Checksum calculations can
be performed on received data. For an example of a program to calculate the
FCS for Transmit Data, refer to 3-2-4 System Checks.
Unit no.
@
1
0
R
0
1
0011
@ 1 0
5
Header
0100
0011
0011
0101
0011
0011
0101
0101
R H
:
Conversion
to ASCII
XOR
XOR
XOR
XOR
FCS
0000
0001
0000
0010
0000
0001
1000
0011
0 0 3 1 0 0 0 1
Text
8
Transmit/receive data
Number of characters in FCS calculation range.
Receive data contains an FCS, delimiter,
terminator, etc. The ABORT command,
however, does not contain an FCS.
FCS calculation result
Receive FCS data
A space follows the semicolon if the
FCS reception is performed normally. If
it is not performed, ERR is displayed.
Calculation result
1000
FCS
5 8
Terminator
* CR
Section 3-4
69