Omron EJ1 User Manual page 196

Frame Configuration
BCC Calculation Example
Response Frame
End Codes
End code Name
0F FINS command error The specified FINS command could not be executed.
10 Parity error
11 Framing error
12 Overrun error
13 BCC error
14 Format error
16 Sub-address error
18 Frame length error
00 Normal completion
STX
02H 30H
BCC =
: XOR (exclusive OR) calculation
Note No response will be returned unless the frame contains all elements up to the
ETX and BCC.
STX Unit No.
02H
1
The OR of 1 bits in received data does not match the setting
for the communications parity.
Stop bit is 0.
The next data was received when the reception data buffer
was full.
The calculated BCC value is different from the received BCC
value.
The FINS-mini command text contains characters other than
0 to 9 and A to F. For details on the echoback test, refer to
6-4-10 Echoback Test.
SID and the FINS-mini command text are not included.
The sub-address is not included.
The received frame exceeds the specified number of bytes.
Command processing was completed normally.
■ End Code Example
When the Sub-address, SID, and FINS-mini Command Text Are Not Included
• Command
STX Unit No.
02H 0
• Response
STX Unit No.
02H 0
The sub-address is "00" and the end code is "16" (sub-address error).
Unit No.
Sub-address SID
30H 30H 30H 30H 30H
30H 30H 30H 30H 30H 30H
Text
Sub-address End code
0 0
2 2 2
BCC calculation range
Meaning
ETX BCC
1 03H
Sub-address
End code
1 0 0 1 6
ETX BCC
FINS-mini command text
35H 30H 30H 03H 35H
35H 30H 30H 03H = 35H
ETX BCC
FINS-mini command text
03H
1
Error detection priority
8
2
1
3
5
7
6
4
None
ETX BCC
03H
Section 6-2
1
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