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What happens when I set the key switch of the operating CPU to STOP while using the redundancy function of the SPH300? Is the operation switched t...
This only stops the operating CPU and the operation is not switched to the standby CPU.
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- No:1588
- Displayed Date:2023/04/25 19:00
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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 ...
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- No:1411
- Displayed Date:2023/04/25 19:00
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Does equalization (from an operating CPU to a standby CPU) of the internal clock take place automatically? If so, when does it take place?
Clock adjustment is initiated from CPU0 (operating) to other CPUs (standby). It takes place on a constant (1-minute) cycle at the time of and after system st...
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- No:1401
- Displayed Date:2023/04/25 19:00
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Can I store multiple programs in the user ROM card (CF or SD) ?
No, it is not possible.
Only one program can be stored.
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- No:1298
- Displayed Date:2023/04/25 19:00
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In the redundant CPU system, the cycle of the default task takes 70 ms. It takes only several microseconds with a single-CPU system. Why is such a ...
Since the data equalization (data copying from the operating CPU to the standby CPU) is performed after the default task is processed, the larger the size of...
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- No:1568
- Displayed Date:2023/04/25 19:00
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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...
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- No:1505
- Displayed Date:2023/04/25 19:00
- Updated DTM:2023/06/09 13:40
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When I mount the user ROM card for the SPH200 (Type_ NP8PMF-16) without changing its write protection from OFF, is the content of the ROM protected?
You should be careful because if the write protection is OFF, the ROM is rewritten simultaneously with the internal RAM of the CPU during program download.
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- No:1617
- Displayed Date:2023/04/25 19:00
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Does the built-in ALM contact of the power supply module of SPH maintain its status (contact closed) even if the power supply recovers to normal af...
When the power supply recovers to normal, the ALM contact automatically returns to the original position (open).
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- No:1289
- Displayed Date:2023/04/25 19:00
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What is the rated current value of the fuse in the power supply module (NP1S-22)? I want to know to select the circuit breaker on the primary side ...
The rated current is 3 A.
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- No:1641
- Displayed Date:2023/04/25 19:00
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Do the blue and white cables for the ALM output of the power supply module (Type_ NP1S-22) have polarity?
No, they do not have polarity because they use relay contacts.
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- No:1585
- Displayed Date:2023/04/25 19:00