Operating Instructions
Chapter
9
DME4000
8014584/ZN33/2017-07
© SICK AG • Germany • Subject to change without notice
119
Appendix
9.6.3
Data Exchange
The type of data exchange is set in the “Edit I/O Parameters” window:
5 bytes of data are sent, the measured value is represented in bytes 0 to 3, byte 4 is diagnostic data:
Byte
0
Position Value (low Byte Attribute 10)
1
Position Value
2
Position Value
3
Position Value (high Byte Attribute 10)
4
Laser on: 1
Laser off: 0
MF1
active: 1
MF1 not
active: 0
MF2
active: 1
MF2 not
active: 0
Reserved by
DeviceNet
Warning: 1
No warning: 0
Alarm: 1
No Alarm: 0
7
6
5
4, 3, 2
1
0
Warning:
This is where all advance failure warnings are output as collective messages:
Overtemperature
Contamination
Laser advanced failure warning
Alarm:
Plausibility error signalled, since no measurement is possible, measured value 0 is output in parallel.
9.6.4
Polled Mode
The process data exchange between DME4000 and DeviceNet Master occurs via a polled I/O connec-
tion, as standard, with the Slaves cyclically polled by the Master.
9.6.5
Change of State Mode
In the Change of State mode (COS/Delta), the data is sent cyclically or when the value of the Delta
Parameter is exceeded.
