Operating instructions
Communication
6.4 Communication via PROFIBUS
Control Units CU240S
152 Operating Instructions, 10/2007, A5E00766042B AC
P0918 PROFIBUS Address
● If address 0 is set on the DIP-switches of the Control Unit (default setting), then the
PROFIBUS DP address can be changed in parameter P0918. Valid settings are 1 to 125
(default = 3).
● DIP-switch address settings have priority to P0918 settings. That means if a valid
PROFIBUS DP address is set via DIP-switches, the settings of P0918 will be ignored. In
this case, the parameter displays the PROFIBUS DP address as set on the DIP-switches.
P0700 and P1000 selection of command and setpoint source
● Command and setpoint source can be quickly selected via P0700 and P1000.
P0922 Selection of PROFIBUS standard telegram
● For failure-free operation, you must select the correct type of telegram. For details, refer
to section "Cyclic Communication" of this manual or the Parameter Manual.
r2050 and P2051 BICO
● Much greater flexibility is afforded by the interconnection of process data using
binectors/connectors.
● Detailed connection of setpoints and actual values to and from the PROFIBUS DP
interface is parameterized in r2050 and P2051.
● The following table shows the parameters specific to the PROFIBUS DP interface relating
to the connection of process data:
Table 6-29 Parameters for flexible interconnection of process data
Telegram PZD1
STW/ZS
W
PZD2
HSW/HI
W
PZD3 PZD4 PZD5 PZD6
Link values for setpoints master to
inverter
r2050.00 r2050.01 r2050.02 r2050.0
3
r2050.0
4
r2050.0
5
Link parameters for actual values
inverter to master
P2051.0
0
P2051.0
1
P2051.0
2
P2051.
03
P2051.
04
P2051.
05
Note
r2050 also acts as a display parameter through which the setpoints received by the
PROFIBUS DP interface can be checked.
P2041 PROFIBUS DP functions
A number of advanced property settings for the PROFIBUS DP interface can be
accomplished using the indexed parameter P2041.
For most applications, however, the defaults values are adequate (value = 0). The following
table shows the property setting options.