Under the IEC 61131-3 standard, PLCs can be programmed using standards-based programming languages.

The industry has standardized on the IEC 61131-3 functional block language for creating programs to run on RTUs and PLCs, although nearly all vendors also offer proprietary alternatives and associated development environments.

A standardized control programming language, IEC 61131-3 ( a suite of 5 programming languages including Function Block, Ladder, Structured Text, Sequence Function Charts and Instruction List ), is frequently used to create programs which run on these RTUs and PLCs.

Unlike a procedural language such as the C programming language or FORTRAN, IEC 61131-3 has minimal training requirements by virtue of resembling historic physical control arrays.

( The IEC 61131-3 standard has helped to reduce unnecessary differences, but translating programs between systems still requires significant work.

* Instruction list, an IEC 61131-3 programming language

The industry has standardized on the IEC 61131-3 functional block language for creating programs to run on RTUs and PLCs, although nearly all vendors also offer proprietary alternatives and associated development environments.

A Function block diagram is one of five programming languages defined in part 3 of the IEC 61131 ( see IEC 61131-3 ) standard.

IEC 61131-3 is the third part ( of 8 ) of the open international standard IEC 61131 for programmable logic controllers, and was first published in December 1993 by the IEC.

* Standard 61131-3 on IEC website

ja: IEC 61131-3

ru: IEC 61131-3

vi: IEC 61131-3

zh: IEC 61131-3

It is one of the five languages defined by IEC 61131-3 standard.

Function block diagram is one of five languages for logic or control configuration supported by standard IEC 61131-3 for a control system such as a Programmable Logic Controller ( PLC ) or a Distributed Control System ( DCS ).

# redirect IEC 61131-3

The ISO 3166-1 alpha-3 codes are used most prominently in ISO / IEC 7501-1 for machine-readable passports, as standardized by the International Civil Aviation Organization, with a number of additional codes for special passports ; some of these codes are currently reserved and not used at the present stage in ISO 3166-1.

Most currently deployed EPC RFID tags comply with ISO / IEC 18000-6C for the RFID air interface standard.

An ISO / IEC working group has researched and documented some of the variations of the recycling logo currently in use, and has made recommendations for adding some more of them to the Unicode standard.

IEC 61107 or currently IEC 62056-21, was an international standard for a computer protocol to read utility meters.

The IEC 60906-1 system also avoids the problems of the Schuko system currently used in most of Europe and large parts of Asia:

It defines the service interface that is implemented by the Common Management Information Protocol ( CMIP ) as specified in ITU-T Recommendation X. 711, ISO / IEC International Standard 9596-1.

ID-1 of the ISO / IEC 7810 standard defines cards as nominally.

According to its abstract, ISO / IEC 7816-5 defines how to use an application identifier to ascertain the presence of and / or perform the retrieval of an application in a card.

ISO / IEC 7816-5: 2004 shows how to grant the uniqueness of application identifiers through the international registration of a part of this identifier, and defines

The USB CCID device class defines a standard for communicating with ISO / IEC 7816 smart cards over USB.

Further, ISO / IEC 7816-15: 2004 defines a common syntax ( in ASN. 1 ) and format for the cryptographic information and mechanisms to share this information whenever appropriate.

JFIF defines a number of details that are left unspecified by the JPEG Part 1 standard ( ISO / IEC IS 10918-1, ITU-T Recommendation T. 81 ):

The ISO / IEC 10646 ( Unicode ) International Standard defines character, or abstract character as " a member of a set of elements used for the organisation, control, or representation of data ".

ISO / IEC 7810 Identification cards — Physical characteristics is an international standard that defines the physical characteristics for identification cards.

ISO / IEC 14443 Identification cards -- Contactless integrated circuit cards -- Proximity cards is an international standard that defines proximity cards used for identification, and the transmission protocols for communicating with it.

IEC 60268-2 defines power amplifier specifications including power output.

The prevailing international standard, IEC 61938, defines 48-volt, 24-volt, and 12-volt phantom powering.

X. 402 | ( ISO / IEC 10021-2 ) defines the overall system architecture of an MHS, ITU-T Rec.

X. 411 | ( ISO / IEC 10021-4 ) defines the Message Transfer Service ( MTS ) and its functional component the Message Transfer Agent ( MTA ), and ITU-T Rec.

X. 413 | ( ISO / IEC 10021-5 ) defines the Message Store.

ISO / IEC 5218 Information technology — Codes for the representation of human sexes is an international standard that defines a representation of human sexes through a language-neutral single-digit code.

ISO / IEC 7816-3 defines the transmission protocol between chip cards and readers.

ISO / IEC 7816 defines a process for application selection.

There are 23 Processes, 95 Activities, 325 Tasks and 224 Outcomes ( the new " ISO / IEC 12207: 2008 Systems and software engineering – Software life cycle processes " defines 43 system and software processes ).

ISO-IEC 8820-5 is a joint ISO / IEC standard that defines Token ring access methods and physical layer specifications.

ISO / IEC 6523 Information technology – Structure for the identification of organizations and organization parts is an international standard that defines a structure for uniquely identifying organizations and parts thereof in computer data interchange and specifies the registration procedure to obtain a so called International Code Designator ( ICD ) value for an identification scheme.

A nearly identical version of TIS-620 has been adopted as ISO / IEC 8859-11 in 2001, the sole difference being that ISO / IEC 8859-11 defines hex A0 as a non-breaking space, while TIS-620 leaves it undefined but reserved.

In electronics, international standard IEC 60063 defines another preferred number series for resistors, capacitors, inductors and Zener diodes.