Siemens TIM 4R-IE DNP3 - Page 176

The SINAUT Configuration Tool
6.6 TD7onTIM
TIM DNP3
176 System Manual, 06/2014, C79000-G8976-C253-03
Parameters in the TD7 Read / Write Cycle box
Name:
Max. write
Range of
values:
1 ... 32000
Default:
1
Explanation:
This is the maximum number of (different) data objects whose data is written
to the CPU per basic cycle.
If there are several messages of the same receive object in the buffer, only
the data of one message of this object is written per basi
c cycle.
As information, the number of receive objects configured for the TIM in total
by the user is displayed above the input box beside
Number of configured
receive objects .
Name:
Max. read
Range of
values:
0 ... 32000
Default:
1
Explanation:
This
is the maximum number of data objects whose data is read from the
CPU per basic cycle.
As information, above the input field beside
Number of configured send
objects
, you can see how many send objects the user configured for the TIM
-
in the normal cycle and
-
in the fast cycle
.
Name:
Cycle pause
Range of
values:
0 ... 32000 [ms]
Default:
1
Explanation:
This parameter specifies the duration of an optional pause between 2 basic
cycles.
A pause may be necessary if communication of other modules on th
e
backplane bus is disrupted too much by the write and read jobs between the
TIM and CPU. This also applies to subscribers on the MPI bus (further CPUs
or PG) if the backplane bus is implemented as a party line. By setting a
suitable time for the pause, th
e other bus subscribers have time for their
communication.
Specifying a cycle pause may also be necessary to relieve the TIM itself; in
other words, when it becomes clear that it has too little time for other tasks
due to the fast read/write cycle.