Mitsubishi Electric MELSEC-L SSCNETIII/H, User Manual

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13
TERM
Unless otherwise specified, this manual uses the following terms.
Term Description
Buffer memory A memory in an intelligent function module, where data (such as setting values and monitoring values) are stored
Cyclic transmission
A function by which data are periodically exchanged among stations on the same network using link devices (RX, RY,
RWw, and RWr)
Data link A generic term for cyclic transmission and transient transmission
Dedicated instruction An instruction that simplifies programming for using functions of intelligent function modules
Device A device (X, Y, W, or others) in a head module
Disconnection A process of stopping data link if a data link error occurs
GX Works2 The product name of the software package for the MELSEC programmable controllers
Head module The abbreviation for the LJ72MS15 SSCNET III/H head module
Intelligent function module A module that has functions other than input and output, such as an A/D converter module and D/A converter module
Link device A device (RX, RY, RWr, or RWw) in a head module
Link special register (SW) Word data that indicates the operating status and data link status of a head module
Link special relay (SB) Bit data that indicates the operating status and data link status of a head module
Motion controller A generic term for the Q173DSCPU/Q172DSCPU Motion CPU module and Q170MSCPU Motion controller
MT Developer2 The product name of the MELSOFT programming software package for the Motion controllers
Parameter memory A flash ROM in a head module, where the parameters of the head module are stored
RAS The abbreviation for Reliability, Availability, and Serviceability. This term refers to usability of automated equipment.
Remote input (RX) Bit data input from a head module to a Motion controller
Remote output (RY) Bit data output from a Motion controller to a head module
Remote register (RWr) Word data input from a head module to a Motion controller
Remote register (RWw) Word data output from a Motion controller to a head module
Return A process of restarting data link when a station recovers from an error
SSCNET III/H One of the high-speed synchronous networks between a Motion controller and a servo amplifier
Transient transmission A function that enables a Motion controller to access a head module by using dedicated instructions