Specifications

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B-4
B Buep 19-Expander driver
• TIMEOUT
Time monitoring for the serial data interchange is active in the PCS
as well as in the programmable controller. In case of an error, an
error message is displayed on the PCS and the ERROR LED flashes.
The PCS tries to set up communication again in the background.
The error message is erased if this has been successful. In the
PCSPRO, the timeout time for order processing is adjustable in the
range of 500ms to 2.55 s.
The following message is displayed in case of a complete communi-
cation loss with the programmable controller:
========== COMMUNICATION ERROR ==========
TIMEOUT COMMUNICATION!
The following display appears in case the tasks are not processed
by the programmable controller. This is the case if the PCSKOMM
program will not be executed or the restart input is not set after a
programmable controller timeout. The cable is possibly defective.
========== COMMUNICATION ERROR ==========
TIMEOUT PLC
• PLC ERROR RECEIVED
Ba means of the protocol, the programmable controller indicates if a
fault has appeared. It will receive a fault byte which informs about
the appeared fault. Please refer to the BOSCH „CL300 Computer
linking module R301“ manual for the possible fault description. In
the shown example, the fault value „2C „ is indicated which
corresponds to addressing an inadmissible DB (is variable AG
correct?).
========== COMMUNICATION ERROR ==========
PLC ERROR RECEIVED: 2C!
• TOO MANY REPETITIONS
The faulty position is repeated if a fault appears in the communication.
The communication is interrupted and the following error message
is output after 3 unsuccessful repetitions. In this case the PCS/
programmable controller connection has been routed through a noisy
environment, the cable is too long for the selected baud rate, or
earthing is insufficient.
========== COMMUNICATION ERROR ==========
TOO MANY REPETITIONS!