Communications configuring
3-184
System- and communication configuring D7-SYS - SIMADYN D
Edition 12.2003
NOTE
If, in the "Manual mode" the CTS connection is set to "0" when
initializing (CTS=0; AUT=0), then it is no longer possible to changeover
into the "Automatic mode: Memory card" (CTS=0; AUT=1).
If the CTS connection is set to "0" while initializing, and the "Automatic
mode: Memory card" is activated (AUT=1), then it is possible to
subsequently changeover to "Manual mode" (CTS=0; AUT=0). The
table, saved on the memory card, can then be processed in the
"Manual mode".
If, after this, a change is made back to "Automatic mode: Memory card"
(CTS=0; AUT=1), this no longer has any effect, because it is only
activated during the initialization operation.
If a communications interface is configured at the CTS connection, it is
possible to toggle, as required between "Manual mode" and "Automatic
mode: Communications".
3.18.3
Automatic mode: Communications
3.18.3.1
Application with an S7 control and SIMATIC FM 458
application module
The following prerequisites must be fulfilled in order to successfully
transfer tables:
•
The function blocks TAB and/or TAB_D must be configured in the
FM 458 application module corresponding to the configuring
specifications for "Automatic mode: Communications" (A detailed
explanation is provided in Section "Configuring for S7 control and
SIMATIC FM 458 application module").
•
The X and Y values of a table in a DB must always be present
alternating. There must be a Y value for each X value, so that the
number of values in a data set is always an integer number.
In order to start data transfer, inputs REQTAB and REQDB at
WR_TAB must be set to 1. The tabular values of the DB, specified at
input DBNUM at WR_TAB can then be transferred.
The actual number of transferred data blocks is always displayed at the
CNTTEL output of the WR_TAB.
The number of data blocks is displayed at the TABTEL output of the
WR_TAB, which is required until the complete contents of the DB are
transferred to the SIMATIC FM 458 application module.
If the tabular values have been completely entered in the specified DB, or
if it involves the last partial transfer of a table (sub-set of a table), which
does not “fit” completely into a DB, then before starting the transfer, input
LASTDB of the WR_TAB should be set to 1. This means that the
SIMATIC FM 458 application module is signaled at the end of the data
transfer. The STATUS output of the WR_TAB then changes from 2 to 0.
Transferring
tabular values
