GS1 EPC Tag Data Standard 1.6 - Indicod-Ecr

333833393340334133423343334433453346334733483349335033513352335333543355335633573358335933603361336233633364336533663367336833693370337133723373337433753376337733783379338018.2.1 Conformance of Hardware and Software ComponentsThat Produce or Consume Gen 2 Memory Bank ContentsThis section specifies conformance of hardware and software components that produceand consume the contents of a memory bank of a Gen 2 tag. This includes componentsthat interact directly with tags via the Gen 2 Air Interface as well as components thatmanipulate a software representation of raw memory contentsDefinitions: Bank X Consumer (where X is a specific memory bank of a Gen 2 tag) A hardwareor software component that accepts as input via some external interface the contentsof Bank X of a Gen 2 tag. This includes components that read tags via the Gen 2 AirInterface (i.e., readers), as well as components that manipulate a softwarerepresentation of raw memory contents (e.g., “middleware” software that receives ahexadecimal-formatted image of tag memory from an interrogator as input). Bank X Producer (where X is a specific memory bank of a Gen 2 tag) A hardwareor software component that outputs via some external interface the contents of BankX of a Gen 2. This includes components that interact directly with tags via the Gen 2Air Interface (i.e., write-capable interrogators and printers – the memory contentsdelivered to the tag is an output via the air interface), as well as components thatmanipulate a software representation of raw memory contents (e.g., software thatoutputs a “write” command to an interrogator, delivering a hexadecimal-formattedimage of tag memory as part of the command).A hardware or software component that “passes through” the raw contents of tag memoryBank X from one external interface to another is simultaneously a Bank X Consumer anda Bank X Producer. For example, consider a reader device that accepts as input from anapplication via its network “wire protocol” a command to write EPC tag memory, wherethe command includes a hexadecimal-formatted image of the tag memory that theapplication wishes to write, and then writes that image to a tag via the Gen 2 AirInterface. That device is a Bank 01 Consumer with respect to its “wire protocol,” and aBank 01 Producer with respect to the Gen 2 Air Interface. The conformancerequirements below insure that such a device is capable of accepting from an applicationand writing to a tag any EPC bank contents that is valid according to this specification.The following conformance requirements apply to Bank X Consumers and Producers asdefined above: A Bank 01 (EPC bank) Consumer SHALL accept as input any memory contents thatconforms to this specification, as conformance is specified in Section 18.1.2. If a Bank 01 Consumer interprets the contents of the EPC memory bank received asinput, it SHALL do so in a manner consistent with the definitions of EPC memorybank contents in this specification. A Bank 01 (EPC bank) Producer SHALL produce as output memory contents thatconforms to this specification, as conformance is specified in Section 18.1.2,whenever the hardware or software component produces output for Bank 01containing an EPC.. A Bank 01 Producer MAY produce output containing a non-EPC if it sets bit 17 h to one.Copyright ©2005- 2011 GS1 AISBL, All Rights Reserved. Page 130 of 218