Siemens Simatic S7-200 System Manual page 48
Programmable controller
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Installing and Using the STEP 7-Micro/WIN Software
Troubleshooting the MPI Communications Setup for Windows NT 4.0
Setting up the MPI card correctly under Windows NT 4.0 is somewhat difficult. If you have
problems with your setup (assuming that you have the MPI card installed in the
communications setup screens), follow these steps:
1.
Make sure you have a working MPI card. There are several ways to do this: you can test
it on a Windows 95 machine or check it under STEP 7-Micro/WIN Version 2.0.
2.
Check the DIP switches on the side of your MPI card to determine how much memory to
reserve for the card. See Table 3-2.
3.
Check to see what resources Windows NT has reserved for the card to make sure that
the reserved resources match the switch configuration. Follow these steps:
a. Open the Setting the PG/PC Interface dialog box.
b. Click the "Install..." button.
c. Select the MPI Card from the Installed list.
d. Click the "Resources" button. This button is available only under Windows NT.
4.
If the resource allocation is correct and your card still does not work, try changing the
hardware interrupt request line to which the card is linked. There may be a conflict with
another piece of hardware. You can use the Resources dialog box to make this change.
5.
If you have gone through every interrupt and the card still does not work, you must
change the DIP switch settings on the card to a different address. Repeat step 3. Repeat
step 4.
6.
If you have tried all of the steps above and your card still does not work, all of your
resources are probably already taken by other pieces of hardware. You can try to
remove or disable some of these other hardware pieces (for example, sound cards) to
try to make some resources available. Then start again with step 2 above.
7.
If all else fails, use a different communications driver.
The documentation that comes with the MPI card explains in more detail the hardware
conflicts that may possibly occur.
Table 3-2
SW1
ON
ON
ON
ON
OFF
OFF
OFF
3-18
Amount of Memory Required for an MPI Card
SW2
SW3
ON
ON
ON
OFF
OFF
ON
OFF
OFF
ON
ON
ON
OFF
OFF
ON
Memory
#000C8000-000C87FF
#000C9000-000C97FF
#000CC000-000CC7FF
#000D0000-000D07FF
#000D1000-000D17FF
#000DC000-000DC7FF
#000E1000-000E17FF
S7-200 Programmable Controller System Manual
C79000-G7076-C230-02
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