Installing And Removing Communications Interfaces - Siemens SIMATIC S7-200 System Manual

S7-200 Programmable Controller System Manual

Installing and Removing Communications Interfaces

From the Set PG/PC Interface dialog box, you use the Installing/Uninstalling Interfaces dialog box
to install or remove communications interfaces for your computer
1. In the Set PG/PC Interface dialog box, click Select to access the Installing/Uninstalling
Interfaces dialog box.
The Selection box lists the interfaces that are available, and the Installed box displays the
interfaces that have already been installed on your computer.
2. To add a communications interface: Select the communications hardware installed on your
computer and click Install. When you close the Installing/Uninstallling Interfaces dialog box,
the Set PG/PC Interface dialog box displays the interface in the Interface Parameter
Assignment Used box.
3. To remove a communications interface: Select the interface to be removed and click
Uninstall. When you close the Installing/Uninstallling Interfaces dialog box, the Set PG/PC
Interface dialog box removes the interface from the Interface Parameter Assignment Used
box.
Figure 7-20 Set PG/PC Interface and Installing/Uninstalling Interfaces Dialog Boxes
Adjusting the Port Settings of Your Computer for PPI Multi-Master
If you are using the USB/PPI Multi-Master cable or the RS-232/PPI Multi-Master cable in PPI
mode, adjustment of your computer's port settings is not necessary and operation in multi-master
networks is possible with the Windows NT operating system.
If you are using the RS-232/PPI Multi-Master cable in PPI/Freeport mode for communication
between an S7-200 CPU and STEP 7--Micro/WIN on an operating system that supports the PPI
Multi-Master configuration (Windows NT does not support the PPI Multi-Master), you might need
to adjust the port settings on your computer:
1. Right-click the My Computer icon on the desktop and select the Properties menu command.
2. Select the Device Manager tab. For Windows 2000, select first the Hardware tab and then
Device Manager button.
3. Double-click the Ports (COM & LPT).
4. Select the communications port that you are currently using (for example, COM1).
5. On the Port Settings tab, click the Advanced button.
6. Set the Receive Buffer and the Transmit Buffer controls to the lowest value (1).
7. Click OK to apply the change, close all the windows, and reboot the computer to make the
new settings active.
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