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Programming manual M238 | 3 MB - BERGER - POSITEC

Programming manual M238 | 3 MB - BERGER - POSITEC

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Glossary<br />

task<br />

TCP<br />

threshold output<br />

TPDO<br />

UDP<br />

T<br />

A group of sections and subroutines, executed cyclically or periodically for the MAST<br />

task, or periodically for the FAST task.<br />

A task possesses a level of priority and is linked to inputs and outputs of the<br />

controller. These I/O are refreshed in consequence.<br />

A controller can have several tasks.<br />

A transmission control protocol is a connection-based transport layer protocol that<br />

provides a reliable simultaneous bi-directional transmission of data. TCP is part of<br />

the TCP/IP protocol suite.<br />

Threshold outputs are controlled directly by the HSC according to the settings<br />

established during configuration.<br />

A transmit PDO reads data from a device in a CAN-based system.<br />

U<br />

The user datagram protocol is a connectionless mode protocol (defined by<br />

IETF RFC 768) in which messages are delivered in a datagram (data telegram) to a<br />

destination computer on an IP network. The UDP protocol is typically bundled with<br />

the Internet Protocol. UDP/IP messages do not expect a response, and are<br />

therefore ideal for applications in which dropped packets do not require<br />

retransmission (such as streaming video and networks that demand real-time<br />

performance).<br />

unlocated variable<br />

An unlocated variable does not have an address. (See located variable.)<br />

254 EIO0000000384 04/2012

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