Siemens SINUMERIK 840DE sl Commissioning Manual page 924

Introduction
1.2 Features
1.2 Features
The SINUMERIK OPC UA server provides the possibility to communicate with SINUMERIK
via OPC UA. The following functionalities of the OPC UA specification are supported by the
server:
● Read, write and subscribe to SINUMERIK variables (NC, PLC) (see chapter Variable
access (Page 38))
● Transfer of part programs (see chapter File transfer (Page 53))
● Event based provision of SINUMERIK alarms and messages from HMI, NC and PLC (see
chapter Alarms (Page 45))
Security settings
The server provides the possibility to communicate in an unencrypted or encrypted way. The
following options are possible:
● None
● 128 Bit - Sign (Basic128Rsa15)
● 128 Bit - Sign & Encrypt (Basic128Rsa15)
● 256 Bit – Sign (Basic256Sha256)
● 256 Bit - Sign (Basic256)
● 256 Bit – Sign & Encrypt (Basic256Sha256)
● 256 Bit - Sign & Encrypt (Basic256)
NOTICE
Security risk of no or low encryption
During operational process, an encrypted communication with high encryption must always
be used for security reasons.
Furthermore, the SINUMERIK OPC UA server provides the possibility of user administration,
which allows to assign access rights for each user individually (see chapter User
administration (Page 31)).
8
SINUMERIK Integrate for Engineering Access MyMachine / OPC UA
Configuration Manual, 12/2017, 6FC5397-1DP40-6BA1