Specifications

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A-18
A LAUER driver
The test and the repetition of the packages is organized in the PCS 830.3/
1.
The design of the PCSKOMM handling block contains provisions for ab-
orting the communication on every coccuring fault and signalling it to the
outside. After this, communication must be explecitely restarted using
the RSETx input (P2 parameter). Of course, this does not affect repetitions
caused by reparable faults as these are treated in the PCS 830.3/1
internally.
A2.3 Parameters of the PCSKOMM PB’S (FB’S)
Attention!
Check the action/reaction of the PLC!
Check the desired action/reaction of the programmable controller after a
restart following a communication interruption to avoid unwanted
malfunctionings.
P0: Cross-reference data block (here: -QUVERW1..QUVERW3)
The cross-reference addresses are listed in this block. At the restart,
these addresses will be transferred once into the PCS 830.3/31. It is
ensured, that the download of the cross-reference list of is made in
the first cycle of the programmable controller. In the CL 300 this first
cycle is extended due to the download by approx. 100 ms. During
the following cycles, the PCSKOMM PB receives the corresponding
cross-reference address directly from the PCS 830.3/1 (time saving).
When using several channels and/or PCS 830.3/1 boards, scan time
problems can be created along with the user program. Therefore,
the handling block contains the additional P5 bit parameter. This bit
signals the user program that the cross-reference list was transferred
in the just finished programmable controller cycle. This way it can be
prevented that several cross-reference lists are transferred in the
same programmable controller cycle. This has been realized in the
example.
CL300, CL500: block parameters (example - QUVERW1, DB0)
PC600: constant K00XXH (example - QUVERW1, K0H); xx = DBnr.
P1: Communication data block (here: -PCSDB1..PCSDB3)
This block is active during processing of the handling block. Cross-
reference addresses specified in the cross-reference data block and
addressing a data word relate to the here indicated data block.
CL300, CL500: block parameters (example - PCSDB1, DB1)
PC600: constant K00XXH (example - PCSDB1, K1H); xx = DBnr.
P2: Switch and/or pushbutton for resetting following a fault (here:
RSET1.. RSET3)
On a communication fault, communications of the corresponding
channel can be restarted using this bit. The faults indicated in DW3
(default assignment) are then reset automatically. Please note that
no edge evaluation is made. I.e. with the P2 bit set communication is
auto-matically restarted after appearing of a fault! This mechanism
can also be realized by connecting the P3 fault output directly to the
P2 reset.
CL300, CL500, PC600: bit parameters (example - RSET1, E0.0)