Communication
8.1 CPU communication connections
S7-200 SMART
354 System Manual, 09/2015, A5E03822230-AC
CPU communication connections
The CPU supports the following maximum number of simultaneous, asynchronous
communication connections:
● Ethernet programming port: The CPU provides the following connections:
– HMI/OPC connections: Eight dedicated HMI/OPC connections.
– PG connections: One programming device (PG) connection.
– Peer-to-peer (GET/PUT) connections: Eight connections to support S7-200 SMART
CPUs or network devices.
-200 SMART CPU uses the GET and PUT instructions for CPU-to-CPU
● PROFIBUS port: Each EM DP01 PROFIBUS DP module can support six connections
with one reserved for an HMI device.
● Integrated RS485 port (Port 0): Four connections to support HMI devices.
● CM01 Signal Board (SB) RS232/RS485 port (Port 1): Four connections to support HMI
devices.
7-Micro/WIN SMART can only connect to an S7-200 SMART CPU through the
Ethernet port. Only one PG can monitor one CPU at a time.
The RS485 and RS232 ports are only for HMI access (Data read/write) and Freeport
communications.
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