LSIS XBL-C41A

Appendix 1 Definition of Terms
A-1
Appendix 1 Definition of Terms
Appendix 1.1 General Terms
Describes PLC general terms used in this manual
(1) Module
A standard element with a specific function to structure a system such as I/O board assembled to be
inserted into the motherboard base
Ex) CPU module, power module, I/O module
(2) Unit
A module or a group of modules as the minimum unit operating in a PLC system being consisted of a
PLC system as it is assembled with other module or a group of modules
Ex) basic unit, extension unit
(3) PLC System
A system consisting of PLC and peripherals structured to be controlled by a user’s program
(4) XG5000
Programming tool creating, editing and debugging a program
(PADT : Programming And Debugging Tool)
(5) XG-PD
Software executing diagnosis, writing, edition of basic parameter, high-speed link, P2P parameter
of internal and external communication module
(6) IO image area
Internal memory area of CPU module installed for keeping IO status