Chapter 29 Precautions On Programming; Instructions Not Available In Redundant System; Instructions That Cause Stop Errors - Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual

29
PRECAUTIONS ON PROGRAMMING
This chapter describes the precautions on programming for a redundant system.
29.1

Instructions Not Available in Redundant System

This section describes the instructions not available in a redundant system.

Instructions that cause stop errors

Do not use the following instructions in backup mode. Doing so causes an error when the operating status of the CPU module
is changed from STOP to RUN.
Classification
Special counter instructions
Special timer instructions
Shortcut control instruction
Ramp signal instruction
Pulse related instructions
Matrix input instruction
Multiple CPU dedicated instructions
29 PRECAUTIONS ON PROGRAMMING
502
29.1 Instructions Not Available in Redundant System
Counting up or down the current value (1-phase input)
Counting up or down the current value (2-phase input)
Teaching timer
Special function timer
Rotary table shortest direction control
Ramp signal
Measuring the density of pulses
Outputting pulses at regular intervals
Performing the pulse width modulation
Matrix input
Reading device data from another CPU module
Writing device data to another CPU module
Instruction symbol
UDCNT1
UDCNT2
TTMR
STMR
ROTC
RAMPQ
SPD
PLSY
PWM
MTR
D.DDRD
DP.DDRD
M.DDRD
MP.DDRD
D.DDWR
DP.DDWR
M.DDWR
MP.DDWR