Thumbwheel Switch: Spare Units

Question

How can Spare Units be used?

Answer

Spare Units can be used to reserve space for when specification or other changes result in a change to the number of digits. Also when the time or length units display is required, characters or symbols can printed or embossed.

Thumbwheel Switch: Advantages of Using Connectors

Question

What are the advantages to using connectors?

Answer

The Switch Units can be easily connected and wired, so wiring, maintenance, and inspection are simple.

Thumbwheel Switch: Switch Unit

Question

What is a Switch Unit?

Answer

A Switch Unit is the main part of a switch. A separate Switch Unit is used for each digit. The number of Switch Units used in combination is the number of digits required.

Thumbwheel Switch: End Cap

Question

What is an End Cap?

Answer

End Caps are used at both ends of a Switch Unit to firmly secure each Unit to a panel. They consist of a pair of left and right caps.

Thumbwheel Switch: Display + and - Only

Question

Is it possible to display only "+" and "-"?

Answer

Yes, it is.

Models with binary-coded decimal (06 models) are available that display "+, -, +, -. . ." rather than "0, 1, 2, 3, 4, 5 . . . 9".

The models are the A7[]-206-PM and A7[]-206-PM-1.

Example:

Thumbwheel Switch
A7BS-206-PM

Output Code:

The signal between output terminal 1 and the COM terminal of the Thumbwheel Switch is used as the binary code.

Example of A7BS-206-PM

Thumbwheel Switch Construction

Question

What is the configuration of the Thumb Rotary Switches?

Answer

The construction is shown in the following figure.

Thumbwheel Switch: Binary-coded Hexadecimal

Question

What is binary-coded hexadecimal?

Answer

Binary-coded hexadecimal uses binary to express each digit of a hexadecimal number. The following characters are used: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.

Examples:

Thumbwheel Switch: Output Signals

Question

What output signals do the Thumbwheel Switches supply in the process of switching numbers?

Answer

Output signals which the Thumb Rotary Switches supply in the process of switching numbers are indefinite.

Thumbwheel Switch: Number Setting

Question

Can we set the digit of the Thumbwheel Switches to be dialed only in the range from 0 to 3?

Answer

(1) Any number can be set with the models equipped with external stoppers.

Applicable Model Number: A7BS-20[]-S

(2) The models equipped with internal stoppers are also available.

Applicable Model Number: A7D[],A7B[],A7P[]

Stoppers are attached when the units are assembled in the factory.

The position where stoppers are attached cannot be changed. They are only available by order.

Add the suffix -S[][]to the model number, specifying the range in the blanks.

Example: in the case of the range from 0 to 3: A7PS-203-S03

Thumbwheel Switch: Binary-coded Decimal

Question

What is binary-coded decimal?

Answer

Binary-coded decimal (BCD) uses binary to express each digit of a decimal number.

Examples:

Display on Thumbwheel Switch

Thumbwheel Switch: End Caps Sold Separately

Question

Do the End Caps come included with the Switch?

Answer

The End Caps are sold separately in a set consisting of a left cap and a right cap. Take this into account when placing an order.

Example: A7B-M End Caps for A7BS Thumbwheel Switches

Thumbwheel Switch: Component-adding Provision

Question

What are Switches with a Component-adding Provision?

Answer

The component-addition provision allows resistors or diodes to be inserted in the circuit before the output terminal.

You can use terminals for the component-adding provision as ordinary solder terminals by using a conductor or similar means to short-circuit the appropriate locations instead of using resistors or diodes.