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DAEnetIP3 User Manual
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17.6.3. CRC16 checking
Figure 65. CRC16 checking

Example 1. Correct communication.
o
[1] DAEnetIP3 [00] receives data over serial line: 00ASG=? 2DE3 ;
o
[2] DAEnetIP3 [00] resends the command over TCP/IP serial network:
00ASG=?;
o
[3] DAEnetIP3 [00] checks the CRC16 checksum. It is valid.
o
[4] DAEnetIP3 [00] sends the response over the serial line:
00ASG=0000 A9FB ;

Example 2. Bit from function code is wrong.
o
[1] DAEnetIP3 [00] receives data over serial line: 00BSG=? 2DE3 ; (a
bit from function code is wrong)
o
[2] DAEnetIP3 [00] resends the command over TCP/IP serial network:
00BSG=?;
o
[3] DAEnetIP3 [00] checks the CRC16 checksum. It is not valid.
o
[4] DAEnetIP3 [00] sends the error over the serial line: 00E3 AE7D ;

Example 3. Bit from address is wrong.
o
[1] DAEnetIP3 [00] receives data over serial line: 05ASG=? 2DE3 ; (a
bit from function code is wrong)
o
[2] DAEnetIP3 [00] resends the command over TCP/IP serial network:
05ASG=?;
o
[3] DAEnetIP3 [00] does not perform response or error over the serial
line, because the address is not [00], but [05].