1 Scope
2 Normative references
3 Definitions
4 Symbols and abbreviations
5 Models
   5.1 PC network communication model
   5.2 PC functional model
   5.3 PC hardware model
   5.4 Software model
6 PC communication services
   6.1 PC subsystems and their status
         6.1.1 PC summary status
         6.1.2 I/O subsystem
         6.1.3 Processing unit
         6.1.4 Power supply subsystem
         6.1.5 Memory subsystem
         6.1.6 Communication subsystem
         6.1.7 Implementer specific subsystems
         6.1.8 Presentation of status information
   6.2 Application specific functions
         6.2.1 Device verification
         6.2.1 Data acquisition
         6.2.3 Control
         6.2.4 Synchronization between user applications
         6.2.5 Alarm reporting
         6.2.6 Application programme execution and I/O
               control
         6.2.7 Application programme transfer
         6.2.8 Connection management
7 PC communication function blocks
   7.1 Overview of the communication function blocks
         7.1.1 Device verification
         7.1.2 Data acquisition
         7.1.3 Control
         7.1.4 Alarm reporting
         7.1.5 Connection management
   7.2 Semantic of communication FB parameters
   7.3 Device verification
   7.4 Polled data acquisition
   7.5 Programmed data acquisition
         7.5.1 USEND/URCV function blocks
         7.5.2 BSEND/BRCV Function Blocks
   7.6 Parametric control
   7.7 Interlocked control
   7.8 Programmed alarm report
   7.9 Connection management
   7.10 Example for the use of communication function
         blocks
         7.10.1 Establishing a communication channel
         7.10.2 Transferring data
         7.10.3 Using a timer to supervise communication
8 Compliance and implementer specific features and
   parameters
   8.1 Compliance
   8.2 Implementation specific features and parameters
Annex A (normative) Mapping to ISO/IEC 9506-5
Annex B (normative) PC behaviour using ISO/IEC 9506-2
Figures
Tables