BS EN IEC 61158-4-25:2019
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Industrial communication networks. Fieldbus specifications – Data-link layer protocol specification. Type 25 elements
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 68 |
IEC 61158-4-25:2019 specifies procedures for the timely transfer of data and control information from one data-link user entity to a peer user entity, and among the data-link entities forming the distributed data-link service provider, and the communication and interworking of sensors, effectors and other automation devices. By using this document together with other standards positioned within the OSI or fieldbus reference models, otherwise incompatible systems may work together in any combination
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 5 | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications |
| 7 | CONTENTS |
| 10 | FOREWORD |
| 12 | INTRODUCTION |
| 13 | 1 Scope 1.1 General 1.2 Specifications 1.3 Procedures |
| 14 | 1.4 Applicability 1.5 Conformance 2 Normative references 3 Terms, definitions, symbols, abbreviations and conventions |
| 15 | 3.1 Reference model terms and definitions |
| 16 | 3.2 Service convention terms and definitions 3.3 Terms and definitions |
| 18 | 3.4 Symbols and abbreviations |
| 19 | 3.5 Common conventions |
| 21 | 3.6 Additional Type 25 conventions 3.6.1 Primitive conventions 3.6.2 State machine conventions Figures Figure 1 โ Relationships of DLSAPs, DLSAP-addresses and group DL-addresses Tables Table 1 โ State transition descriptions |
| 22 | 4 Overview of the DL-protocol 4.1 General 4.2 Overview of the medium access control 4.2.1 General Table 2 โ Descriptions of state machine elements Table 3 โ Conventions used in state machine |
| 23 | 4.2.2 Network topology Figure 2 โ Ring control in Type 25 network Table 4 โ Characteristics of the node states |
| 24 | 4.2.3 Priority control with VLAN Figure 3 โ Communication ranges of Type 25 frames Table 5 โ Characteristic of the frame classes Table 6 โ VLAN priority mapping of Type 25 network |
| 25 | 4.2.4 The maximum delivery delay in Type 25 network Figure 4 โ Priority control with VLAN of Type 25 network Figure 5 โ The mechanism of transmission delay in a node |
| 26 | 4.2.5 Traffic control for real-time communication 4.3 Service assumed from PhL Figure 6 โ The maximum delay in Type 25 network |
| 27 | 4.4 DL Layer architecture Figure 7 โ Data-Link layer internal architecture Table 7 โ Data-link layer components |
| 28 | 4.5 Local parameters and variables 4.5.1 Overview 4.5.2 Variables, parameter, counter and timer |
| 29 | 5 General structure and encoding of PhPDUs and DLPDU and related elements of procedure 5.1 Overview 5.2 Common MAC frame structure, encoding and elements of procedure 5.2.1 MAC frame structure |
| 30 | 5.2.2 Elements of the MAC frame Figure 8 โ Type 25 fieldbus DLPDU frame format Table 8 โ Destination address format |
| 31 | Figure 9 โ RCL frame format Table 9 โ VLAN tag format |
| 32 | 6 DLPDU-specific structure, encoding and elements of procedure 6.1 General 6.2 Structure of the RCL DLPDU 6.2.1 RCL header Table 10 โ Types and classes of RCL frames |
| 33 | Table 11 โ Structure of RCL header Table 12 โ Class field format Table 13 โ Destination address field format |
| 34 | 7 DLE elements of procedure 7.1 Overview 7.2 RCL communication control (RCLC) 7.2.1 General 7.2.2 Primitive definitions Table 14 โ Source address field format Table 15 โ CMD field format |
| 35 | Table 16 โ The primitives and parameters for DLS-user interface Table 17 โ Parameters used with primitives exchanged between RCLC and DLS-user |
| 36 | Table 18 โ The primitives and parameters for TRC interface Table 19 โ Parameters used with primitives exchanged between RCLC and TRC |
| 37 | 7.2.3 RCLC state machine Table 20 โ The primitives and parameters for DLM interface Table 21 โ Parameters used with primitives exchanged between RCLC and DLM |
| 38 | Figure 10 โ State transition diagram of RHE_SM-A Table 22 โ Transitions of RHE_SM-A at RCL communication |
| 41 | Figure 11 โ State transition diagram of RHE_SM-B Table 23 โ Transitions of RHE_SM-B at RCL communication |
| 44 | Figure 12 โ The state diagram of RCLNode_SM Table 24 โ Transitions of RCLNode_SM at RCL communication |
| 51 | Figure 13 โ The state diagram of RCLTR_SM |
| 52 | Table 25 โ Transitions of RCLTR_SM at RCL communication |
| 53 | 7.2.4 Function of RCLC 7.3 Real-time communication control (RTC) 7.3.1 General 7.3.2 Primitive definitions Table 26 โ RCLC function table |
| 54 | Table 27 โ The primitives and parameters for DLS-user interface Table 28 โ Parameters used with primitives exchanged between RTC and DLS-user Table 29 โ The primitives and parameters for TRC interface |
| 55 | 7.3.3 RTC state machine Table 30 โ Parameters used with primitives exchanged between RTC and TRC Table 31 โ The primitives and parameters for DLM interface Table 32 โ Parameters used with primitives exchanged between RTC and DLM |
| 56 | 7.3.4 Function of RTC Figure 14 โ The state diagram of RTTR_SM Table 33 โ Transitions of RTTR_SM at RT communication Table 34 โ RTC function table |
| 57 | 7.4 Transmit/Receive control (TRC) 7.4.1 General 7.4.2 Primitive definitions 7.4.3 TRC state machine Figure 15 โ The state diagram of TRC_SM Table 35 โ The primitives and parameters for DLM interface Table 36 โ Parameters used with primitives exchanged between TRC and DLM |
| 58 | Table 37 โ Transitions of TRC_SM |
| 62 | 7.4.4 Function of TRC Table 38 โ TRC function table |
| 63 | 7.5 DLL management protocol (DLM) 7.5.1 Overview 7.5.2 Primitive definitions Table 39 โ Primitives exchanged between DLM and DLS-user |
| 64 | 7.5.3 DLM state machine (DLM_SM) Figure 16 โ The state diagram of DLM_SM Table 40 โ Parameters used with primitives exchanged between DLM and DLS-user |
| 65 | Table 41 โ Transitions of DLM_SM |
| 66 | Bibliography |
