IEC 61784-3-18:2011/AMD1:2016

Amendment 1 - Industrial communication networks - Profiles - Part 3-18: Functional safety fieldbuses - Additional specifications for CPF 18

Applies to radiotherapy simulators:[
]- that use diagnostic X-ray equipment to simulate physically a therapeutic radiation beam, so that the treatment volume to be subjected to irradiation during radiotherapy can be localized, and the position and size of the radiotherapy radiation field can be confirmed;[
]- intended exclusively for radiotherapy simulation as a prelude to intended radiotherapy, and not for any other purpose such as general diagnostic examinations.[
]Establishes requirements to ensure the ionizing radiation safety and enhanced mechanical and electrical safety of radiotherapy simulators; it identifies geometrical parameters that are critical for the accurate simulation of a radiotherapy treatment.[
]Cancels and replaces the first edition published in 1993 and its amendment 1 (1996).

Amendement 1 - Réseaux de communication industriels - Profils - Partie 3-18: Bus de terrain de sécurité fonctionnelle - Spécifications supplémentaires pour le CPF 18

S'applique aux simulateurs de radioth�rapie:[
]- qui utilisent un �quipement � rayonnement X de diagnostic pour simuler la g�om�trie d'un faisceau de rayonnement afin que le volume trait� soumis � l'irradiation pendant la radioth�rapie puisse �tre localis� et que la position et les dimensions du champ de rayonnement de radioth�rapie puissent �tre confirm�es;[
]- utilis�s exclusivement pour une simulation de radioth�rapie pr�liminaire � un traitement de radioth�rapie d�termin�, et non pour d'autres utilisations telles que les examens de diagnostic g�n�ral.[
]Etablit des prescriptions qui ont pour but d'assurer la protection contre le rayonnement ionisant et de renforcer les niveaux de s�curit� m�canique et �lectrique des simulateurs de radioth�rapie. Identifie les param�tres g�om�triques qui sont essentiels pour la simulation pr�cise d'un traitement par radioth�rapie.[
]Annule et remplace la premi�re �dition parue en 1993 et son amendement 1 (1996).

General Information

• Status: Published
• Publication Date: 30-Mar-2023
• ICS: 11.040.60 - Therapy equipment
• ICS: 13.110 - Safety of machinery
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.100.05 - Multilayer applications
• Technical Committee: SC 65C - Industrial networks
• Current Stage: WPUB - Publication withdrawn
• Completion Date: 31-Mar-2023

Standards Content (Sample)

IEC 61784-3-18
Edition 1.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AM ENDMENT 1
AM ENDEMENT 1
Industrial communication networks – Profiles –
Part 3-18: Functional safety fieldbuses – Additional specifications for CPF 18
Réseaux de communication industriels – Profils –
Partie 3-18: Bus de terrain de sécurité fonctionnelle – Spécifications
supplémentaires pour le CPF 18
IEC 61784-3-18:2011-04/AMD1:2016-07(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61784-3-18
Edition 1.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AM ENDMENT 1
AM ENDEMENT 1
Industrial communication networks – Profiles –
Part 3-18: Functional safety fieldbuses – Additional specifications for CPF 18
Réseaux de communication industriels – Profils –
Partie 3-18: Bus de terrain de sécurité fonctionnelle – Spécifications
supplémentaires pour le CPF 18
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.110; 25.040.40, 35.100.05 ISBN 978-2-8322-3479-2

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 61784-3-18:2011/AMD1:2016
 IEC 2016
FOREWORD

This amendment has been prepared by subcommittee 65C: Industrial networks, of IEC

technical committee 65: Industrial-process measurement, control and automation.
The text of this amendment is based on the following documents:
FDIS Report on voting
65C/851/FDIS 65C/854/RVD

Full information on the voting for the approval of this amendment can be found in the report

on voting indicated in the above table.

The committee has decided that the contents of this amendment and the base publication will

remain unchanged until the stability date indicated on the IEC web site under

"http://webstore.iec.ch" in the data related to the specific publication. At this date, the

publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 4 ----------------------
IEC 61784-3-18:2011/AMD1:2016 – 3 –
 IEC 2016
5 General
5.2 Safety functional requirements
Add, in this subclause, at the end of the list, the following new items:

• For devices using protocol version 2 (see 7.1.3.4) it is required to add 10 to the PFH

of the device hardware to account for the communication channel.

NOTE In this way, the user of the device will not have to account for the number of logical connections

within a safety function.
• The use of error correction mechanisms in the black channel is permitted.
7 Safety communication layer protocol
7.1.2.1 SPDO structure
Replace, in this subclause, the existing Table 4 by the following new table:
Table 4 – SPDO PDU structure
Octet offset Data field Description
0 to 2 PID Packet ID
3 Length Length of the complete packet in octets
4 to 4+n-1 Safety data 1 Mapped safety application process data
4+n to 5+n SID 1 Safety ID of the sender

6+n to 6+n+m-1 Consecutive number 1 Consecutive number for sequencing and application

monitoring where:
m = 1 for protocol version 1
m = 3 for protocol version 2
7+n+m to 10+n+m CRC 1 32 bit cyclic redundancy check covering data fields
PID, safety data 1, SID 1 and consecutive number 1
11+n+m to 11+2n-1+m Safety data 2 Copy of mapped safety application process data
11+2n+m to 12+2n+m SID 2 Copy of SID 1
13+2n+m to 13+2n+2m-1 Consecutive number 2 Copy of consecutive number 1
14+2n+2m to 17+2n+2m CRC 2 32 bit cyclic redundancy check covering data fields
PID, safety data 2, SID 2 and consecutive number 2

NOTE 1 n is the length in octets of the data field safety data 1 (safety data 2).

NOTE 2 m is the length of the consecutive number depending on the protocol version (see 7.1.3.4).

7.1.2.4 Safety data
Replace, in this subclause, second paragraph:

“117 octets” by “115 octets for protocol version 2 or respectively 117 octets for protocol

version 1”.
7.1.2.6 SPDO consecutive number
Replace, in this subclause, “an 8 bit” by “a”.
Add, at the end of this subclause, the following text:

The size of the consecutive number depends on the protocol version (see 7.1.3.4) and is 1

octet for protocol version 1 and 3 octets for protocol version 2.
---------------------- Page: 5 ----------------------
– 4 – IEC 61784-3-18:2011/AMD1:2016
 IEC 2016
7.1.2.7 SPDO CRC
Delete, in this subclause, first paragraph, ”length”.
7.1.3.1.1 SHB request PDU
Table 5 – SHB request PDU structure
Replace, in this subclause, the existing Table 5 by the following new table:
Table 5 – SHB request PDU structure
Octet offset Data field Description
0 to 2 PID Packet ID
3 Length Length of the complete packet in octets
4 SCL state 1 SALMT state (see Table 7)

5 to 5+n-1 Safety AP state 1 Safety application process state (implementation specific)

6+n to 7+n SID 1 Safety ID of the sender

8+n to 8+n+m-1 Consecutive number 1 Consecutive number for sequencing and application

monitoring where:
m = 1 for protocol version 1
m = 3 for protocol version 2
9+n+m to 12+n+m CRC 1 32 bit cyclic redundancy check covering data fields PID,
SCL state 1, Safety AP state 1, SID 1 and consecutive
number 1
13+n+m SCL state 2 Copy of SALMT state 1
14+n+m to 14+2n+m-1 Safety AP state 2 Copy of safety application process state 1
15+2n+m to 16+2n+m SID 2 Copy of SID 1
17+2n+m to 17+2n+2m-1 Consecutive number 2 Copy of consecutive number 1

18+2n+2m to 21+2n+2m CRC 2 32 bit cyclic redundancy check covering data fields PID,

SCL state 2, Safety AP state 2, SID 2 and consecutive
number 2
NOTE 1 n is the length in octets of the data field Safety AP state.

NOTE 2 m is the length of the consecutive number, depending on the protocol version (see 7.1.3.4).

---------------------- Page: 6 ----------------------
IEC 61784-3-18:2011/AMD1:2016 – 5 –
 IEC 2016
7.1.3.1.2 SHB response PDU
Table 6 – SHB response PDU structure
Replace, in this subclause, the existing Tabl
...