Meanings Of Host Parameters - Siemens SIMATIC S5 Manual

Parameterizing, saving and documenting the configuration with COM ET 200 Windows
Meanings of the
host parameters
Table 8-4 Meanings of host parameters
Designation
Host designation The name for the host system. Max. length: 40 characters.
Host type The host type is the CPU to which the IM 308-C is assigned
(not applicable to S5-95U).
Power-up delay The CPU power-up is delayed for this length of time, so that the DP master
can address all DP slaves configured with COM ET 200 Windows. Note,
however, that the time specified here is the upper limit for the delay.
When the timer times out, CPU power-up continues even if the DP master
did not succeed in addressing all the DP slaves configured with COM ET
200 Windows.
The CPU reaction depends on which error-reporting mode is selected:
Reserv. I... These parameters enable you to reserve input and output address areas that
can then be used for central I/O modules or other IM 308-Cs in the
Reserv. O...
programmable controller.
If you use page addressing, the input and output address areas are reserved on
each page.
In this way, you can avoid the danger of having the same S5 addresses used
for distributed I/O and for I/O modules in the central or expansion units.
Entering host
parameters
8-10
The meanings of the individual host parameters are shown in Table 8-4.
QVZ (see Section 11.2 for details)
PEU ( see Section 11.2 for details)
No error-reporting mode: The CPU remains on RUN even if a DP slave
has failed. There is a danger of the CPU reading invalid input values
from slaves that are physically no longer present.
To enter the host parameters:
1. Select Configure Host parameters
or
double-click on "Host designation".
Result: The "Host parameters" dialog box is opened.
2. Set the host parameters. Click on the "Help" button to obtain
context-sensitive help on the host parameters.
3. Confirm the host parameter settings and close the dialog box by pressing
the "OK" button.
Meaning Default
–
–
20 s
–
ET 200 Distributed I/O System
EWA 4NEB 780 6000-02a