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Autocoding refers to software solutions that help manufacturers, particularly those in the food industry, ensure that products have the correct packaging and correct 'sell by' date codes, thereby reducing the number of Emergency Product Withdrawals (EPW). The term was first used during an initiative between Geest PLC (acquired by Bakkavor in 2005 BBC News 2005 Story on acquisition) and in 2001.

The key objective of the software was to reduce the number of EPW's associated with date and price coding errors, and pot and lid marriage errors. This still remains the main objective of autocoding software, but functionality has been expanded to encompass quality assurance and performance data. Alan France, OEE and Autocoding Integration, Engineering Maintenance 25 July 2013


History
The concept of autocoding originally came from an initiative between Geest PLC and in 2001, with both parties seeking to reduce the number of emergency product withdrawals associated with packaging and date coding errors. From here, a number of software engineering companies expanded on this preliminary work to create more reliable and robust systems. In 2004, 2D barcoding was introduced for the first time, a major step forward for the securing of all parts of .

Prior to this, 1D retail barcodes were used that only offered limited protection as they did not cover all packaging on products. meant that lids, sleeves, pack could all be identified by a barcode scanner to check that the product is packaged and dated correctly. In 2009, Marks and Spencer introduced a code of practice for the labelling of products that stipulated an autocoding system must be used on every production line. In 2013, it was estimated that autocoding software protects over 1500 lines in the United Kingdom; the largest supplier is Olympus Automation, which protects 723 food production lines. Olympus Automation Protects 723 Lines Globally


System elements
All autocoding systems comprise a products database which contains standard reference information for each product including packaging type, labels and sell by date criteria. In most cases a is positioned on the shop-floor to allow the operator to select the next product from a product schedule.


1D and 2D barcode scanning
The shop-floor touch screen device is linked to scanners deployed to scan the code on each piece of packaging, including promotional labels and sleeves. Originally the bar codes scanned were based on standard 1D codes but to avoid mistakes 2D bar codes were introduced in 2004 so that each packaging type could hold a unique identity. To checks that the scanners are operational Autocoding solutions include two way communications with all hardware devices, or prevent the lines starting if links are not available.


Date code printing
To ensure that ‘sell by dates’ are accurate, most autocoding systems directly control the line printers through the software application. Once the operator has selected the product to run, the product reference table identifies the date range to use and the printer output is sent directly to the printer. Again, like the bar code scanners, autocoding systems include two-way communications with date code printers, and prevent the production lines from starting if links are not available.


Line stops
If any error is detected, such as wrong film/pack, wrong lid, wrong case, or printer fault, the line is stopped. This is a standard requirement and is achieved through the use of PLCs.


System providers
Numerous companies provide autocoding solutions, ranging from standalone systems to comprehensive MES/MIS solutions that incorporate additional features and benefits. Notable industrial vendors include:
OAL Group
AutoCoding Systems

Harford Control Ltd
Sparc Systems

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