Siemens SIMATIC S7 System Manual page 22

Product overview
1.2 New features
Firmware update with STEP 7-Micro/WIN SMART
You can now download firmware updates on all CPU models through any of the following
serial ports:
● RS485 port
● Signal board port
● DP01 PROFIBUS port
See also
Creating a user-defined library of instructions (Page 563)
EM DE08 and EM DE16 digital input specifications (Page 725)
EM DT08, EM DR08, EM QR16, and EM QT16 digital output specifications (Page 727)
S7-200 SMART I/O expansion cable (Page 779)
Using STEP 7-Micro/WIN SMART to create your programs (Page 111)
Modbus RTU library (Page 476)
Open user communication library (Page 498)
Open user communication (Page 217)
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System Manual, V2.3, 07/2017, A5E03822230-AF
S7-200 SMART