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Warning notice
Before using this function, you must ensure that the system will not reach any
hazardous status caused by the forced control of the digital outputs of the
SIWAREX FTC.
5.6.4
DR 7 - Process Value 1 for Fast Output to the SIMATIC CPU
The current process values can be read as data packages (data records) in the
SIMATIC CPU using function block FB43. Transferring a large data record can last
for several CPU cycles and puts a load on system performance.
If a process value should be transferred very quickly to the SIMATIC CPU
immediately after its origination in the SIWAREX FTC, the peripheral interface of
the SIWAREX FTC exists. The data is read by the FB43 cyclically and provided for
the user as an output variable. In the belt scale operating mode, normally the
current belt load (selection code 45) is of some importance. Selection is from the
Table 5-21
list See:
5.6.5
DR 7 - Process Value 2 for Fast Output to the SIMATIC CPU
Process value 2 can be defined just the same as process value 1 (see above).
Normally the current Conti status (selection code 30) is of interest in the loss-in-
weight scale operating mode.
5.6.6
DR 7 - Definition of the Process Alarms 0, 1, 2, 3, 4, 5, 6, 7
The process alarms can be defined with this parameter. The module group can
generate process alarms in the SIMATIC CPU. The control program can react
immediately to an event this way. Defining a process alarm is explained with the
example of process alarm 0. The explanation also applies to process alarms 1 to 7.
If parameter value 0 is defined for process alarm 0 then no process alarms are
generated.
By entering a value unequal to zero, a process alarm is allocated according to the
following procedures:
Value range 1 to 255
Number of the technology message. If the defined technology error occurs then
process alarm 0 is generated.
Value range 256 to 319
Number of the bit from the NAWI- or Conti status (see DR 30). If the defined status
occurs then process alarm 0 is generated.
256+ 0... 31 Bit-No. NAWI status bit coming
288+ 0... 31 Bit-No. Conti status bit coming
Value range 512 to 575
Number of the bit from the NAWI- or Conti status (see DR 30). If the defined status
goes then process alarm 0 is generated.
512+ 0... 31 Bit-No. NAWI status bit going
544+ 0... 31 Bit-No. Conti status bit going
5-62
SIWAREX FTC
Process values for allocating
.
log fields
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