Manual
Weld Seam Detection System R4000 SND40
for Tubes, Cans and Drums
Communication with the PLC
B0059001 / Rev. 2.3
56
ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. 17 · DE 75210 Keltern · Phone +49 (0)7236-9392-0 · Fax +49 (0)7236-9392-33
5.2.1 Fieldbus interface
5.2.2 Data transmission
The SND40 with integrated Fieldbus- interface can communicate with a Fieldbus-master. The data
transmission communication takes place in cyclic data exchange mode.
For each transmission direction 4 bytes are reserved.
M
ast
er
Data direction
Input
SND4
0
→
Byte BIN0
Pr
ocess ch
an
nel
→
Byte BIN1
→
Byte BIN2
→
Byte BIN3
M
ast
er
Data direction
Output
SND4
0
←
Byte BOUT0
Pr
ocess ch
an
nel
←
Byte BOUT 1
←
Byte BOUT 2
←
Byte BOUT 3
Note:
When configuring the data format, attention must be paid to provide consistent
data transmission from the PLC.
Note:
For CC-Link assignment see also chapter 4.9.3 "CC-Link Connection".
The allocation of the control signals is described in the signal overview.
The timing behaviour of the control via the bus corresponds with the information provided in the
timing diagrams of the parallel interface.