Terms - Mitsubishi Electric MELSEC iQ-R Series User Manual

TERMS

Unless otherwise specified, this manual uses the following terms.
Term
Buffer memory
Control system
CPU module
Cyclic transmission
Data link
Dedicated instruction
Device
Device supporting iQSS
Disconnection
Engineering tool
Global label
Intelligent device station
Intelligent function module
Label
Link device
Link scan (link scan time)
Link special register (SW)
Link special relay (SB)
Local station
Master station
Master/local module
Module label
RAS
Redundant system
Remote device net Ver.1 mode
Remote device net Ver.2 mode
Remote device station
Description
Memory in an intelligent function module for storing data such as setting values and monitored values.
When integrated into the CPU module, this memory refers to a memory for storing data such as setting
values and monitored values of the Ethernet function, and data used for data communication of the
multiple CPU system function.
A system that takes control and performs network communications in a redundant system
A generic term for the MELSEC iQ-R series CPU modules
A function by which data are periodically exchanged among stations on the same system using link
devices
A generic term for cyclic transmission and transient transmission
An instruction for using the functions of a module
A device (X, Y, M, D, or others) in a CPU module
A generic term for a device which supports iQ Sensor Solution.
For iQ Sensor Solution, refer to the following.
 iQ Sensor Solution Reference Manual
A process of stopping data link if a data link error occurs
Another term for the software package for the MELSEC programmable controllers
A label that is valid for all the program data when multiple program data are created in the project.
There are two types of global label: a module specific label (module label), which is generated
automatically by GX Works3, and an optional label, which can be created for any specified device.
A station that exchanges I/O signals (bit data) and I/O data (word data) with another station by cyclic
transmission. This station responds to a transient transmission request from another station and also
issues a transient transmission request to another station.
A module that has functions other than input and output, such as an A/D converter module and D/A
converter module
A label that represents a device in a given character string
A device (RX, RY, RWr, RWw, SB, or SW) in a CC-Link module
Time required for all stations in a system to transmit data. The link scan time depends on data volume
and the number of transient transmission requests.
Word data that indicates the operating status and data link status of modules on the master and local
stations
Bit data that indicates the operating status and data link status of modules on the master and local
stations
A station that performs cyclic transmission and transient transmission with the master station and other
local stations.
A station that controls the entire system. This station can perform cyclic transmission and transient
transmission with all stations. Only one master station can be used in a system.
The abbreviation for the RJ61BT11 CC-Link system master/local module
A label that represents one of memory areas (I/O signals and buffer memory areas) specific to each
module in a given character string.
For the module used, GX Works3 automatically generates this label, which can be used as a global
label.
The abbreviation for Reliability, Availability, and Serviceability. This term refers to usability of automated
equipment.
A system consisting of two systems that have same configuration (CPU module, power supply module,
network module, and other modules). Even after an error occurs in one of the two system, the other
system takes over the control of the entire system. For details, refer to "Redundant system" of the
following manual.
 MELSEC iQ-R Module Configuration Manual
A mode used to configure a system only with a master station and Ver.1-compatible remote stations.
More remote device stations can be connected compared to the remote net Ver.1 mode.
A mode used to configure a system only with remote stations containing master stations and Ver.2-
compatible remote stations or to add Ver.2-compatible remote stations in future (a system only with
master stations and Ver.1-compatible remote stations).
More remote device stations can be connected compared to the remote net Ver.2 mode.
A station that exchanges I/O signals (bit data) and I/O data (word data) with the master station by cyclic
transmission. This station cannot perform transient transmission.
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