User manual

IEC61131 User and Reference Manual
April 22, 2008
333
Outputs
Type
Description
forma
Integer
Protocol format errors are the number of received
messages that don't have the correct framing or
internal formatting. This is a count of how many
messages are garbled.
For Modbus ASCII this includes:
 start of message missing
 end of message missing
 unexpected start of message inside message
 unexpected end of message
 invalid characters in message
For Modbus RTU this includes:
 received data is too short to be a message
 received data is too long to be a message (it
didn't fit in the 256 byte buffer).
check
Integer
Protocol checksum errors are the number of received
messages with a bad checksum.
mCmdS
Integer
Protocol master commands sent
mRspR
Integer
Protocol master responses received
sCmdR
Integer
Protocol slave commands received
sRspS
Integer
Protocol slave responses sent
status
Integer
Protocol master command status
0 = message sent, waiting for response
1 = response received, no error occurred
2 = not used
3 = bad value in function code register
4 = bad value in slave controller address register
5 = bad value in slave register address
6 = bad value in length register
7 = not used
8 = not used
9 =specified protocol is not supported by this
controller
msgsS
Integer
Protocol stored messages
msgsF
Integer
Protocol forwarded messages
See Also
mbusinfo