Can I remove user ROM card in the CPU module (CF or SD) while the CPU is running?

A user ROM card can be inserted and removed when the UROM LED is not illuminated (the key switch is set to a position other than UROM). When removing it whi... Show Detail

Can I use a base board with station No. setup function (Type_ NP1B*-**S) as a standard base board (without 'S' at the end of type code)?

You can use it as a standard base board by setting its station No. to '00.' In this case, you also need to set the system definition of the loader designed f... Show Detail

How does the redundant system handle tasks being executed when the operation is switched from an operating CPU to a standby CPU?

The equivalent data is retained for one default task during switching and the standby CPU starts execution from the beginning of the task. Show Detail

I bought an SPH series CPU module and the supplied battery was not connected to the CPU unit. Should I connect it? What is it for?

The battery supplied with a CPU module is used to back up the following memories in the CPU module when a PLC system is turned off. Basically, connect the ba... Show Detail

When redundant CPUs mounted on the same base board break down, can I replace the CPU without turning off the power?

If the CPU modules are mounted on a hot plug base board with station No. setup function, you can replace them without turning off the power. Show Detail

Is there an alarm output contact to use when an error occurs in the PLC system?

For an alarm contact output of an error of the PLC system, select an arbitrary output module in the system definitions and define its 0th bit as a 'system DO... Show Detail

For what application is the base board with station number setting switch used?

It is used as a base specified for 'system fail-soft start-up' operation, which is set when there is any base with some modules on which power is not turned ... Show Detail

Can I store multiple programs in the user ROM card (CF or SD) ?

No, it is not possible. Only one program can be stored. Show Detail

A CPU module has a rotary switch (0 to F) for setting the CPU No. on its front. What CPU No. should I set?

Usually, set the CPU No. to 0. The CPU No. 0 works as a master of an SX bus system. In a multi-CPU system or a CPU redundant system which uses multiple CPU ... Show Detail

Is there an RAS that detects an error of the external power supply used for an I/O module?

No, there isn't. Receive the external power supply as an external input to detect the status. Show Detail