TOSHIBA USIO21 switch

TOSHIBA USIO21 switch

Technical data of product parameters

Slot Number: Each module location (called a ”slot”) on a baseplate has a unique number
(except for the unnumbered left slot which is for the Power Supply). The slot to the right of the USIO21
Power Supply slot is always called Slot 1. These slot numbers are marked on the baseplate’s
plastic cover. Each slot has a connector for module connections and top and bottom retainers
for holding the module in place.
Module Location: Since each rack is assigned a unique number, and since each slot in a rack’s
baseplate has a unique slot number, each individual module’s location in a system can be
identified by its rack and slot numbers. For example, a module could be referred to as ”the USIO21
module in Rack 1, Slot 4.” This numbering method enables the CPU to correctly read from and
write to a particular module, and report the location of a faulted module.
CPU Baseplate: A baseplate that either has a CPU built-in to its backplane circuit board
(embedded CPU) or one that has a slot for a plug-in CPU module (modular CPU). There can
only be one CPU baseplate in a Series 90-30 PLC system and it will always be called Rack 0
(zero). A CPU module can only mount in Slot 1 of a CPU baseplate. A special Option
module, such as the FIP Remote I/O Scanner module (IC693BEM330) can also be used in Slot
1 of a CPU baseplate. I/O, Power Supply, and most Option modules cannot fit in a CPU slot. USIO21
Expansion Baseplate: One that does not contain a CPU and which can be mounted up to 50
cable-feet from the CPU baseplate. An Expansion baseplate cannot operate on its own. It must
be used in a system that has a controlling CPU.
Remote Baseplate: One that does not contain a CPU and which can be mounted up to 700
cable-feet from the CPU baseplate. A remote baseplate cannot operate on its own. It must be
used in a system that has a controlling CPU.
Power Supply Slot: Each baseplate must contain its own Power Supply module, which must
mount in the Power Supply slot. It is the slot located on the left end of the baseplate, it is not
numbered, and it has a unique size and shape so that only a Power Supply module can mount in
it.

Product picture display

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reminder

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