ANSI C12.18:2006(R2016)
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
American National Standard for Protocol Specification for ANSI Type 2 Optical Port
Hardcopy , PDF
02-08-2024
English
03-16-2017
1 Scope
2 References
3 Definitions and Syntax
3.1 Definitions
3.1.1 C12.18 Client
3.1.2 C12.18 Device
3.1.3 Point-to-point Communications
3.1.4 Table
3.2 Document Syntax
4 Protocol Details
4.1 Order of Transmission
4.2 Layer 7 - Application Layer
4.2.1 Data Structure
4.2.2 Protocol Specifications for Electric Metering
4.2.2.1 Request Codes
4.2.2.2 Response Codes
4.2.2.3 Identification Service
4.2.2.4 Read Service
4.2.2.5 Write Service
4.2.2.6 Logon Service
4.2.2.7 Security Service
4.2.2.8 Logoff Service
4.2.2.9 Negotiate Service
4.2.2.10 Wait Service
4.2.2.11 Terminate Service
4.2.2.12 Partial Table Access Using the
Index/element-count Method
4.2.2.13 Index Count Access Method Examples
4.2.2.14 Partial Table Access Using the
Offset/octet-count Method
4.3 Layer 6 - Presentation Layer
4.4 Layer 5 - Session Layer
4.5 Layer 4 - Transport Layer
4.6 Layer 3 - Network Layer
4.7 Layer 2 - Data Link Layer
4.7.1 Basic Data
4.7.1.1 Default Settings
4.7.2 Packet
4.7.3 Duplicate packets
4.7.4 CRC selection
4.7.5 Acknowledgment
4.7.6 Retransmission
4.7.7 Time-out
4.7.7.1 Channel Traffic Time-out
4.7.7.2 Inter-character Time-out
4.7.7.3 Response Time-out
4.7.8 Delays
4.7.8.1 Turn-around Delay
4.8 Layer-1 - Physical Layer
4.8.1 Physical
4.8.2 Basic Data
4.8.3 Light Levels
4.8.3.1 Optical Characteristics
4.8.3.2 Transmitter Characteristics
4.8.3.3 Receiver Characteristics
4.8.3.4 Environmental Lighting Condition
5 Compliance
Annex A - Communication Example (Layer 7 and Layer 2)
Annex B - Packet Transmission Example
Annex C - Service Sequence State Control
Annex D - Compatibility
D.1 Backward compatibility with previous versions of
the Standard
D.2 Forward compatibility with next versions of the Standard
Annex E - Historical Background
E.1 Foreword of C12.18-1996 and C12.18-1996 (R2002)
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