MELSEC iQ-R Series

OPC UA server module

  • The OPC UA server module realizes embedded OPC UA server which can be installed directly on the MELSEC iQ-R Series base unit. Using this module integrates the OPC UA server directly into the equipment.

    • RD81OPC96

    OPC UA

Embedded OPC UA server configures a highly reliable system

  • Reliability improvement
  • Maintenance cost reduction
  • Promotes standardization of connectivity between the IT system and the shop floor with international standard OPC UA communication
  • The OPC UA server module improves reliability by eliminating the requirement for a computer-based server, which can be vulnerable to high security risks such as computer viruses. In addition, secure communication with certificate validation and user authentication can prevent theft, tampering, incorrect operation, and unauthorized execution due to unauthorized access by third parties
  • Less hardware maintenance is required, reducing overall system cost as industrial control systems have a longer product service life compared to computers

Embedded OPC UA server configures a highly reliable system

OPC UA server module software specifications

Item RD81OPC96
Profile Embedded 2017 UA Server Profile, OPC Spec Version 1.04
Encryption setting (security policy*1)
  • None: No security
  • Aes256-Sha256-RsaPss: AES 256-bit encryption + SHA-256
  • Aes128-Sha256-RsaOaep: AES 128-bit encryption + SHA-256
  • Basic256Sha256: Basic 256-bit encryption + SHA-256
  • Basic256 (deprecated): Basic 256-bit encryption
  • Basic128Rsa15 (deprecated): Basic 128-bit encryption
Signature setting (security mode)
  • None: No security
  • Sign: Add signature
  • Sign & Encrypt: Add signature and encryption
User authentication setting
  • Anonymous
  • User ame/password
  • Certificate validation
Basic operating specifications
Connection method Ethernet IPv4
Simultaneously connected configuration software 1
Device memory input/output specifications
Max. number of tags 10000
Access device Max. number 8
Type RCPU, QCPU (Q mode), LCPU
Data collection period Max. number of definitions 8
Setting cycle 200 ms…24 h
Connected OPC UA clients
Max. number of connections 15
Connectable Ethernet port CH1

*1.Available security policies differ for each firmware version of the OPC UA server module and software version of the configuration tool.
For details, please refer to the MELSEC iQ-R OPC UA Server Module User’s Manual (Application) (SH-081694ENG).

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