Siemens SIMATIC S7 System Manual page 38

Getting started
2.1 Connecting to the CPU
The "Communications" dialog provides two methods of selecting the CPU to be accessed:
● Click the "Find CPUs" button to have STEP 7-Micro/WIN SMART search your local
network for CPUs. The RS485 network address of each CPU found on the network is
listed under "Found CPUs".
● Click the "Add CPU" button to manually enter the access information (RS485 network
address and baud rate) for a CPU that you wish to access. The RS485 network address
for each CPU, manually added with this method, is listed under "Added CPUs" and is
retained.
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For "Found CPUs" (CPUs located on the RS485
network), use the "Communications" dialog to
connect with your CPU:
Select "PC/PPI cable.PPI.1" for your Commu-
•
nication Interface.
Click the "Find CPUs" button to display all
•
operational CPUs ("Found CPUs") on the
RS485 network. All CPUs default their RS485
network settings to address 2 and 9.6 Kbps.
Highlight a CPU, and then click "OK".
•
Note: You can open multiple copies of
STEP 7-Micro/WIN SMART on a computer. Be
aware that when you open a second copy of
STEP 7-Micro/WIN SMART or use the "Find
CPUs" button in either copy, the communication
connection to the CPU in your first/other copy of
STEP 7-Micro/WIN SMART might be disconnect-
ed.
For "Added CPUs" (CPUs on the RS485 network),
use the "Communications" dialog to connect with
your CPU:
Select "PC/PPI cable.PPI.1" for your Commu-
•
nication Interface.
Click the "Add CPU" button.
•
Enter the RS485 network address and baud
•
rate of a CPU that you wish to access directly
on the RS485 network.
You can add multiple CPUs on the RS485
network. As always, STEP 7-Micro/WIN
SMART communicates with one CPU at a
time. All CPUs default their RS485 network
settings to address 2 and 9.6 Kbps.
Highlight a CPU, and then click "OK".
•
System Manual, V2.3, 07/2017, A5E03822230-AF
S7-200 SMART