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Publication S177E V2.0 Issue 12/04
Glossary of Terms
Address
The unique address for a field unit on the Pakscan loop, range 1-240
Loop
The digital, twisted pair 2-wire data communication link
Field Unit
The Pakscan option card fitted to the actuator, or complete General Purpose field
unit
Master/Slave
The method of communication used on the field loop. The master station controls
the data exchange on the highway
Node
A single device (address) on the Pakscan loop
RS485
The electrical properties as defined by the IEA485 standard, 2-wire twisted pair.
RS232
The electrical properties as defined by the IEA232 standard
Abbreviations
Comms
Communications
FCU
Pakscan Field Unit
RAM
Random Access Memory
ROM
Read Only Memory
RTU
Remote Terminal Unit
SW
Software
