SY-EPC-LPC Converter-Concepts / Assembly

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Introduction

Context

Principles

Design

Validation

Example

HCR Code

CERN, and therefore EPC uses a codification based on a 19 characters code, which intends to identify any item at CERN, if managed. (Not all items owns a "HCR code"; this decision comes from the item designer or owner, and reflets his aim to trace, identify and manage through database tool the unit.

Context

This page is a simplified explanation of some basic principles used in SY-EPC mainly, to easily share information with section members. It must not be taken as a reference.

CERN Item Codification

1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19
H	C	R	W	X	Y	Z	0	0	1	-	C	R	0	0	0	6	6	6
LHC, LHC, Rectifier (EPC). LHC-Inherited.			A 4-char unique item type code. Some letters can indicate item nature.				A 3-dig item type version, or _ _ _ for a converter.				Manuf. code. (CR: CERN).		A 6-dig Serial number, for each given item. This S/N allows to trace the item during its whole life (repair, operation...).

CERN-EPC Item Documentation

1	2	3	4	5	6	7	8	9	10	11	EDMS Field: Identification & Item Name
H	C	R	W	X	Y	Z	0	0	1	-	1	(v1)	Item Type Name
H	C	R											This HCR is assined to all CERN items.
			W	X	Y	Z							4 char = unique type of unit / item.
							0	0	1				001 = version. PCB: HCR version = EDA one: EDA-01234-V1-0 <=> HCRWXYZ001-0
											1		1 = execution. PCB: HCR exec. = EDA one: EDA-01234-V1-1 <=> HCRWXYZ001-1
												(v1)	This v.x doc version comes from EDMS, to be ignored since not linked to item property.