Cognex DMA-EZCCM-001, User Manual

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Byte Description Bit Description Comment
0
Trigger
Status
0 Trigger Ready
0 = Not Ready to Accept Trigger via Fieldbus (state
when Trigger Enable is low or currently processing
trigger or soft event)
1 = Ready to Accept new Trigger via Fieldbus
1 Trigger Ack Confirmation of receiving Trigger ON bit, stays on until
Trigger bit is low
2 Acquiring
0 = Reader Idle
1 = Reader Processing a trigger (whether it came from
photo eye or fieldbus)
3 Missed Trigger
0 = No Error
1 = Received a trigger (signal from Photo Eye or Field
bus) when an other trigger or soft event is processing.
Will reset automatically when a successful trigger could
be processed again.
4 Current Mode
0 = Setup Tool Mode
1 = Run Mode
5 Serial Error
0 = No Error; Reader is Connected
1 = No Reader connected
6
Trigger Pin 4
Current State
Copy state of input line IN 1
7
Trigger Pin 2
Current State
Copy state of input line IN 2
1 Result Status
0 Results Available Indicates that a new set of read results are available (i.e.
the contents of the Result Data are valid). Cleared when
results are acknowledged by PLC
1 Result Ack mirror This bit mirrors the state of the "Results Ack" bit from the
output data. This is not exactly "Result Data Valid".
When the result data is first presented, this bit will still be
"0," since it just mirrors the "Results Ack" bit from the last
output but the data is valid.
2 Result Data Buffer Overrun
3
4
5
6
7 General Fault Indicates that a fault has occurred (currently reports V1
or V2 undervoltage)
2
Soft Event
Status
0 ... 6 Soft Event Error Code
Soft event error code from DMCC
Error code 127 - timeout
7 Command Completed or
Timed out
3 ResultCode 0 ... 7
0 - Trigger result
1 - SoftEvent Command is running
2- SoftEvent Command Complete
4 TriggerID 0..7
ID value of the next trigger to be issued. Used to match
issues triggers with corresponding result data received
later.
5 ResultID 0.7
The value of the “Trigger ID” counter when the trigger
that generated these results was issued.
6 ResultLength 0..7
Actual number of bytes contained in the “Result Data"
field
25
Getting Started