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© Systeme Lauer GmbH
AEG120DR-driver
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B
B1.4 Trouble-shooting
Here, the most frequent faults are listed which occur during the first commissioning
and permanent operation:
1 DIL switch no. 8 is set to ON or the rotary switch is to a position >3. If this is the
case, then the PCS enters a diagnosis routine after powering up. This is required
only for test purposes. Remedy: set DIL switch 8 to OFF or the rotary switch to 0
and restart the PCS (by cycling power or pressing the momentary reset push-
button above the DIL switch).
2 A time-out is reported in the programmable controller. In this case, the fault is
to be searched at the programmable controller - PCS connection. Maybe, the
cable is defective or plugged in incorrectly. Maybe, a wrong driver is also loaded
into the PCS. An incorrectly defined flag word area is also possible.
3 The communication is active (PCS ERR LED is deactivated) but after a certain
time the following message appears on the upper display line of the PCS:
COMMUNICATION ERROR
An explanatory help text is shown on the lower display line:
TIMEOUT COMMUNICATION:
Transfer fault in the BKOS protocol. In this case, the PCS - programmable controller
connection is routed in a noisy environment, the cable length is too long or the
grounding is insufficient. Also, this message can result from a too small or incorrectly
defined flag word area in the programmable controller.
TIMEOUT PLC:
The determined time-out time (AA driver variable) was exceeded. This can occur
only in the SYNC operating mode and means that the synchronization word
(data word 3) was not processed in the programmable controller in time. Has the
handling software been loaded into the programmable controller? Is the data area
selected correctly? Is the restart input on 1 level?
A helpful diagnosis for the 090/095/900 PCS is the output of the PCS status on the
display. This display can be accessed in PCS versions later than 201.6 by the
following combination: press the Help key after a PCS start (e.g. after a reset). The
ERR LED must light constantly. This option is available no more after starting the
communication (ERR LED is deactivated or flashes). By pressing the Help plus
arrow keys you can display the PCS version, the data block version, and the driver
version as well as the selected driver variables.
First commissioning
