C-2
Communications Processor CP 541
EWA 4NEB 812 6188-02
C.1
Structure of DB1
With your entries in DB1, you coordinate the exchange of data between the
connected programmable controller and SINEC L2.
DB1 is subdivided into three areas, as shown in Figure C-1. You can define
the following three areas in DB1:
General SINEC L2 parameters, block identifier SL2 (SINEC L2)
CP 541-specific parameters, block identifier COM
(communication)
Parameters for the DP connection, block identifier DPS (DP slave)
DB1
SL2:
; COM:
; DPS:
; END
DB1
Figure C-1 Structure of DB1
You mark the area for the general SINEC L2 parameters with the block iden-
tifier SL2. This contains the station number, transmission rate and various
time-dependent parameters. This area is described in Appendix C.3.
You mark the area with the CP 541-specific parameters with block identifier
COM. It contains the conversion for node address 0, the SAP for the broad-
cast, the send delay time, receive delay time and the priority list. This area is
described in Appendix C.4.
You mark the area with parameters for the DP connection with block identi-
fier DPS. It contains the number of data words for input and output data and
the response monitoring time for DP messages from the connected program-
mable controller to the CP 541. This area is described in Appendix C.5.
Introduction
Structure
General SINEC L2
Parameters
CP 541-Specific
Parameters
DP Parameters
Parameters of DB1