
Slave Addressing
54
06/99 AWB 2700-1364 GB
Example
The PS 4-271 (the master) exchanges data of type
“word” with a slave with CPU. You define the number
of send and receive bytes when configuring the
stations in the Sucosoft S 40 topology configurator
(see chapter "Software Configuration" on Page 31).
Figure 22: Configuration example for the sending or
receiving of communication data
The syntax for sending or receiving of data can be
seen from the configuration.
Table 8: Syntax for addressing slaves with CPU
(data type: word)
Master
RD
SD
RD
SD
Line 1
Intelligent slave
IL program
in ...
Data flow
Ope-
rand
Data-
type
Line
Stn. Module Byte/
word
Bit
Syntax
... Master
Master
←
Slave
Master
→
Slave
RDW/
SDW
Word
1
1
0
0
–
RDW1.1.0.0/
SDW1.1.0.0
... Slave
Slave
←
Master
Slave
→
Master
RDW/
SDW
Word
0
0
0
0
–
RDW0.0.0.0/
SDW0.0.0.0
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