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15BError messages
107BSystem errors: error codes R01...R30 (RTS errors)
16-18
Error message
Cause(s)
Solution
R18
The AS-i master signals a timeout dur-
ing the communication with the fieldbus
master (host).
During the continuous communication of
the master with the operating system
the master has detected a timeout.
Possible causes:
5. Voltage drops on the 24 V power
supply cable
6. Operating system software error.
On 1:
►
Use a switched-mode power supply
to supply the device.
On 2:
►
Reinstall operating system
R19
Error message not active at present
►
Error message not active at present
R20
Profibus DP configuration invalid
The configuration of the Profibus master
for the device is not valid.
Possible causes:
•
Module lengths incorrect
•
Number of modules incorrect
•
Sum of the data lengths across all
modules too large
►
Check the received data lengths in
the menu "Fieldbus Setup"
R21
No Profibus DP card present in the sys-
tem
A Profibus DP card is expected in the
device, however, it has not been de-
tected.
Possible cause: wrong operating sys-
tem in the unit: e.g. AC1325 operating
system software in an AC1311.
►
Install valid operating system
R22
Profibus DP parameters invalid
The parameter setting of the Profibus
master for the device is not valid.
Possible causes:
•
Structure of the parameter field
incorrect
•
Length of the parameter field incor-
rect
•
Coding of the different parameters
does not correspond to the specifi-
cation
►
Adopt the parameter field from the
GSD file and modify it according to
the specification.