Siemens SIMATIC S7 - Page 706

Technical specifications
A.2 S7-200 SMART CPUs
S7-200 SMART
706 System Manual, V2.3, 07/2017, A5E03822230-AF
Table A- 42 Communication
Technical data
CPU ST40 DC/DC/DC
CPU SR40 AC/DC/Relay
CPU CR40s AC/DC/Relay
Number of ports Ethernet: 1
Serial ports: 1 (RS485)
Add-on serial ports: 1 (with
optional RS232/485 signal
board)
Ethernet: 1
Serial ports: 1 (RS485)
Add-on serial ports: 1 (with
optional RS232/485 signal
board)
Ethernet: 0
Serial ports: 1 (RS485)
Add-on serial ports: 0
HMI device Ethernet: 8 connections
Serial ports: 4 connections
per port
Ethernet: 8 connections
Serial ports: 4 connections
per port
Ethernet: Not available
Serial ports: 4 connections
per port
Programming device (PG) Ethernet: 1 connection
Serial ports: 1 connection
Ethernet: 1 connection
Serial ports: 1 connection
Ethernet: Not available
Serial ports: 1 connection
CPUs (PUT/GET) Ethernet: 8 client and 8 server
connections
Ethernet: 8 client and 8 server
connections
Ethernet: Not available
Open user communication Ethernet: 8 active and 8 pas-
sive connections
Ethernet: 8 active and 8 pas-
sive connections
Ethernet: Not available
Data rates Ethernet: 10/100 Mb/s
RS485 system protocols:
9600, 19200, and 187500 b/s
RS485 freeport: 1200 to
115200 b/s
Ethernet: 10/100 Mb/s
RS485 system protocols:
9600, 19200, and 187500 b/s
RS485 freeport: 1200 to
115200 b/s
Ethernet: Not available
RS485 system protocols:
9600, 19200, and 187500 b/s
RS485 freeport: 1200 to
115200 b/s
Isolation (external signal
to PLC logic)
Ethernet: Transformer isolat-
ed, 1500 V AC
RS485: none
Ethernet: Transformer isolat-
ed, 1500 V AC
RS485: none
Ethernet: Not available
RS485: none
Cable type Ethernet: CAT5e shielded
RS485: PROFIBUS network
cable
Ethernet: CAT5e shielded
RS485: PROFIBUS network
cable
Ethernet: Not available
RS485: PROFIBUS network
cable