SEMI A3 - Specification for Printed Circuit Board Equipment Communication Interfaces (PCBECI)
The purpose of this Specification is to define the equipment communication interface for printed circuit board (PCB) manufacturing. A robust and comprehensive shop-floor communication standard would specify detailed, bidirectional communication has been needed to improve productivity and reduce the costs to develop the equipment interface in PCB manufacturing.
This Document is designed for software engineers implementing communication interfaces especially for PCB manufacturing to establish a robust and expandable framework for the integration of equipment. A collection of SEMI and other standards have been referenced.
This Specification aims to provide a common interface especially for the equipment used in PCB manufacturing. It is independent of the base technology used. It is mainly intended to be applied to exposure process, drilling process or plating process—however it is not limited to these areas of application.
This Specification is used for the purpose of standardizing the host/equipment interfaces within factory automation systems only.
This Specification is developed for both of the inline equipment and batch equipment. A piece of manufacturing equipment is a mechanical and physical entity in shop-floor which plays a role in the manufacturing process. It can be used to transport, store or process material and can have a modular structure. A host is a computer or a network of computers which exchange information with the equipment in order to fulfill manufacturing tasks.
This Specification intends to lay the foundation for a reliable and extensible IT integration framework for PCB manufacturing based on proven standards using a multilayered approach. As far as possible the Specification references existing SEMI Standards to realize these layers. The resulting framework is referred to as printed circuit board equipment communication interface (PCBECI).
Referenced SEMI Standards
SEMI E4 — Specification for SEMI Equipment Communications Standard 1 Message Transfer (SECS-I)
SEMI E5 — Specification for SEMI Equipment Communications Standard 2 Message Content (SECS-II)
SEMI E30 — Specification for the Generic Model for Communications and Control of Manufacturing Equipment (GEM)
SEMI E37 — Specification for High-Speed SECS Message Services (HSMS) Generic Services
SEMI E37.1 — Specification for High-Speed SECS Message Services Single Selected-Session Mode (HSMS-SS)
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