Terms - Mitsubishi Electric MELSEC iQ-R Series User Manual

TERMS

Unless otherwise specified, this manual uses the following terms.
Term
Buffer memory
Connection type
Device
Engineering tool
Flash ROM
Global label
Intelligent function module
Master node
Module label
Parameter for master function
Parameter for slave function
Process CPU (process mode)
Redundant system with redundant
extension base unit
Reserved node
Slave node
Description
Memory in an intelligent function module to store data such as setting values and monitor values.
For CPU modules, it refers to memory to store data such as setting values and monitor values of the Ethernet function,
or data used for data communication of the multiple CPU system function.
Communication methods that are used for I/O communications between the master node and slave nodes.
When the RJ71DN91 is used as a master node, one of the following connection types, which are defined by the
DeviceNet specification, can be selected for each slave node.
• Polling
• Bit strobe
• Change of state
• Cyclic
When the RJ71DN91 is used as a slave node, I/O communications are performed in polling.
A memory of a CPU module to store data. Devices such as X, Y, M, D, and others are provided depending on the
intended use.
A tool used for setting up programmable controllers, programming, debugging, and maintenance.
Internal memory of the RJ71DN91, in which parameters can be saved.
Parameters that are saved in the flash ROM are read automatically to the buffer memory when the system is powered
off and on or the CPU module is reset. (When module parameters are not set with GX Works3 or "Basic parameter
setting" of the module parameter is set to "Program")
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 module that has functions other than an input or output, such as an A/D converter module and D/A converter module
Device that exchanges I/O data with slave nodes which are configured with the master function parameters.
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.
A parameter for setting information, such as a connection type and the number of I/O points, to perform I/O
communications with each slave node when the RJ71DN91 is used as the master node
Parameters that change the number of I/O points of a slave node when the RJ71DN91 is used as a slave node
A Process CPU that operates in the process mode.
Process control function blocks and the online module change function can be executed.
A redundant system that is configured using extension base unit(s)
A node reserved for future use. This node is not actually connected, but counted as a connected node.
A device that communicates I/O data with the master node
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