Burkert Type 8640 - Manual (Page 25)

25
Configurationandparameter
settingsforPROFIBUSDP
9.2. Start-Up
Setting the PROFIBUS address
via DIP switch
DIP Switches
Are extension terminals (RIO)
present 1)
Should the default
input mode or filter be
modified
How should inputs /
outputs be put
together 2)
Parameterization
Configuration
Example
1
2
3
4
Parameterization Parameterization
Configuration Configuration
Example
5
Example
6
DP bus
DP main
terminal
DP bus
DP main
terminal
RIO extension
No
No
Yes
bitwise bytewise
Yes
1) Extension terminals are connected to the valve terminal via the RIO interface
2) Advantage of bitwise distribution:
1. If the number of inputs or outputs does not correspond to the byte pattern then bits remain unused with bytewise con-
figuration. For instance, with a valve terminal with 4 valves and a valve terminal with 10 valves that amounts to 10 bits with
bytewise configuration (4+6 bits), because the first valve terminal requires 1 byte and the second one requires 2 bytes.
With bitwise distribution the outputs can be combined. This means that only 2 bytes are needed and 2 bits remain unused.
2. The bitwise composition means that the identifiers / slots (assignation in process image) can be selected at will in the
configuration program.
Figure 13: Start-Up
english
Type 8640