Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual page 38

The following terms are used when the SIL2 Process CPU or the Safety CPU is used.
Term
Pair version
Safety communications
Safety control
Safety cycle processing
Safety cycle time
Safety device
Safety program
Safety programmable controller
Standard communications
Standard control
Standard CPU
Standard device
Standard program
Standard programmable controller
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Description
Version information that determines combination of the SIL2 Process CPU and SIL2 function module, and the
Safety CPU and safety function module
Communication service that processes the send/receive of network layers for the safety defined in the safety
predefined protocol
Machine control by safety programs and safety data communications. When an error occurs, the machine in
operation is securely stopped.
A safety cycle processing is a execution processing for safety programs and safety input/output.
A interrupt time for executing a safety I/O and safety program
A device that can be used in safety programs
A program for performing safety control
A generic term for the MELSEC iQ-R series modules that perform safety control (such as the Safety CPU, safety
function module, CC-Link IE Field Network remote I/O module (with safety functions))
Communications other than safety communications, such as cyclic transmission and transient transmission of
CC-Link IE Field Network
Machine control by standard programs and standard data communications. Modules other than the safety
programmable controller hold only standard control. (This term is used to distinguish from safety control.)
A generic term for MELSEC iQ-R series CPU modules that perform standard control. (This term is used to
distinguish from CPU modules that perform safety control.)
A device (X, Y, M, D, or others) in a CPU module. (Safety devices are excluded.) This device can be used only in
standard programs. (This term is used to distinguish from a safety device.)
A program that performs sequence control. (Safety programs are excluded.) (This term is used to distinguish
from a safety program.)
A generic term for MELSEC iQ-R series modules that perform standard control (This term is used to distinguish a
programmable controller from a safety programmable controller.)