
Glossary
industrial I/O | An Advantys STB I/O module designed at a moderate cost for typical continuous, |
| |
| threshold ratings, usually providing |
| protection, good resolution, and field wiring options. They are designed to operate |
| in |
input filtering | The amount of time that a sensor must hold its signal on or off before the input |
| module detects the change of state. |
input polarity | An input channel’s polarity determines when the input module sends a 1 and when |
| it sends a 0 to the master controller. If the polarity is normal, an input channel will |
| send a 1 to the controller when its field sensor turns on. If the polarity is reverse, an |
| input channel will send a 0 to the controller when its field sensor turns on. |
input response | The time it takes for an input channel to receive a signal from the field sensor and |
time | put it on the island bus. |
INTERBUS | The INTERBUS fieldbus protocol observes a master/slave network model with an |
protocol | active ring topology, having all devices integrated in a closed transmission path. |
IP | internet protocol. That part of the TCP/IP protocol family that tracks the internet |
| addresses of nodes, routes outgoing messages, and recognizes incoming |
| messages. |
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L
LAN | local area network. A |
light industrial | An Advantys STB I/O module designed at a low cost for less rigorous (e.g., |
I/O | intermittent, |
| lower temperature ranges with lower qualification and agency requirements and |
| limited |
| options. |
linearity | A measure of how closely a characteristic follows a |
LSB | least significant bit, least significant byte. The part of a number, address, or field that |
| is written as the rightmost single value in conventional hexadecimal or binary |
| notation. |
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60 | 890USE19600 April 2004 |