Grounding of CC-Link

The functional grounding is applied to ensure the reliability of the communication. More Details >>

Measurement of the counter in the MC (master control) circuit

When the count condition of the counter in the MC circuit remains set, the counter counts when the MC circuit is turned on. More Details >>

Regarding number of connectable expansion modules

Up to 16 expansion modules can be connected. However, up to 15 intelligent modules can be connected. More Details >>

Number of modules that can be synchronized using the MELSEC iQ-R series inter-module synchronization function

The number of modules that can be synchronized is as follows. - In single CPU system configuration: 64 modules - In multiple CPU system configuration: 57 t... More Details >>

VxWorks

It is an embedded RTOS (real-time OS) developed by Wind River, which is proven worldwide as reliable and stable.The version of the operation system installed... More Details >>

How to set file register setting

No setting is required.File registers are enabled by default in basic model QCPU. More Details >>

Operation error at the execution of a BIN instruction

Keep SM722 ON or correct the program so that any one of the ten numbers 0 to 9 is stored in each digit of the source data.An operation error occurs when data... More Details >>

Battery-less operation

Uncheck "Check battery", an item of "Error Check", in the [PLC RAS setting] ([PLC Parameter] -> [PLC RAS setting]). More Details >>

When a message indicating that "the memory space is insufficient" appears during online change

This problem occurs because the consecutive free memory space for temporarily storing the program during online change is insufficient. In this case, perform... More Details >>

Availability of step ladders for FX in L series

Step ladders are not available in LCPU. There is no alternative function. More Details >>