Rockwell Automation 900 Temperature Controller Communications Functions - Series B - Manual (Page 18)

Publication 900-UM004D-EN-E - July 2010
2-2 Bulletin 900 Communications Procedures 900-TCx (CompoWay/F)
Response Frame
• The end code is returned for each command frame that was addressed
to the local node.
• No response will be returned unless the frame contained all elements up
to the ETX and BCC.
• “Error Detection Priority” indicates the priority when two or more
errors occur simultaneously.
Table 2.2
End
Code Name Description Error
Detection
Priority
00 Normal
completion The command ended normally without error. None
0F FINS
command
error The specified FINS command could not be executed.
The FINS response code should indicate why the
command could not be executed. 8
10 Parity error The sum total of bits whose received data is 1 does
not match the set value of Communications Parity. 2
11 Framing
error Stop bit is 0. 1
12 Overrun
error An attempt was made to transfer new data when the
reception data was already full. 3
13 BCC error The calculated BCC value is different from the
received BCC value. 5
14 Format error • The command text contains characters other than
0 to 9, and A to F. This error is not applicable to
the echoback test. (For details, see Refer
to Echoback Test on page 2-17)
• No SID and command text. Or, no command text
• MRC/SRC not included in command text
7
16 Sub-address
error • Illegal (unsupported) sub-address
• No sub-address, SID and command text
• Sub-address less than two characters, and no SID
and command text
6
18 Frame
length error The received frame exceeds the fixed (supported)
number of bytes. 4
Command Text BCC
ETX
1 1 2 2 2
End Code Sub-address Node No.
STX
1