DeviceNet / CANopen
Leuze electronic
DDLS 200
47
TNT
35/7-2
4
V
9.7.1 Schematic drawing of the inner construction
Figure 9.12: Segmentation
• Data from segment 1 are written in receive buffer CU (10 frames) and optically transmitted directly
from there.
• The transmitted data are received by the DT2 and written in receive buffer OP (64 frames >
800 kBit and 128 frames < 800 kBit).
• Data in receive buffer OP are sorted by priority or processed according to the FIFO principle
(depending on the operating mode used)
• Data in receive buffer OP are passed to segment 2 for arbitration.
• The same process also occurs when transmitting data from segment 2 to segment 1.
One arbitration segment
Arbitration segment 1
Arbitration segment 2
TN1
TN4
TN2
TN3
TN1
TN4
TN2
TN3
DT2
DT1
DT2
DT1
Data from segment 2
to segment 1
Arbitrate data on seg
-
ment 1
Arbitrate data on seg
-
ment 2
Data from segment 1
to segment 2
Optical full duplex trans
-
mission
Receive buffer OP
Receive buffer CU
Receive buffer CU
Receive buffer OP
Frame
Frame
Frame
Frame
Frame
Frame
Frame
Frame
Frame
Frame
Frame
Frame
Frame
Frame
Frame
Frame
Original bus without optical
data transmission
Split bus with optical
data transmission DDLS 200
DDLS200_E.book Seite 47 Mittwoch, 19. Februar 2020 12:22 12
