JPH1027038A - Connection cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a controller small in size by converting a supply source voltage into an operating voltage of a peripheral device and supplying this voltage as the operating voltage of the peripheral device. SOLUTION: The connection cable 200 is provided with a voltage converter 201 and also provided with supply source voltage input lines 202a and 202b which lead the supply source voltage to the voltage converter 201 through a connector 1 and operating voltage supply lines 203a and 203b which outputs the operating voltage for the operation of the peripheral device 300 which is converted by the voltage converter 210 to the peripheral device 300. Then when the supply source voltage is inputted to the voltage converter 201 through branch lines 104a and 104b, the connector C1, and supply source voltage input lines 202a and 202b, the voltage converter 201 converts the supply source voltage into the voltage needed for the operation of the peripheral device 300 and supplies the converted voltage to the peripheral device 300 through the operating voltage supply lines 203a and 203b and connector C2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection cable for connecting a control device and peripheral devices.

[0002]

2. Description of the Related Art Conventionally, some peripheral devices such as a small programmer connected to a main body of a programmable controller (hereinafter referred to as a PC main body) receive a supply of operating voltage from the PC main body. As shown in FIG. 2, the peripheral device which receives the supply of the operating voltage from the PC main unit connects the signal line S for transmitting and receiving data and the operating voltage supply between the PC main unit 1 and the peripheral device 5 as shown in FIG. They are connected by a connection cable 6 composed of wires 6a and 6b.

The PC body 1 includes a plurality of voltage converters 3a for converting a supply voltage to an operation voltage of the control unit 2 and a plurality of voltage converters 3b for supplying an operation voltage to the peripheral device 5. There is.

[0004]

As described above, it is necessary to provide a plurality of voltage converters 3a and 3b for supplying the operating voltage of the peripheral device 5 to the PC main body 1 side. Had been hindered.

[0005]

According to a first aspect of the present invention, there is provided a connection cable for transmitting and receiving data between a control device and a peripheral device. A power supply voltage input line for inputting a power supply voltage supplied to the device, a voltage converter for converting the power supply voltage input through the power supply voltage input line to a voltage for operating the peripheral device, An operating voltage supply line for supplying the voltage as an operating voltage of the peripheral device. (Operation) According to the first aspect, the power supply voltage input to the control device is converted into the operating voltage of the peripheral device by the voltage converter, and the operating voltage is supplied to the peripheral device.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a connection cable according to an embodiment of the present invention. Reference numeral 100 denotes a PC main body. A peripheral device 300 such as a small programmer is connected to the PC main body 100 via a connection cable 200.

The PC main body 100 is supplied with a power supply voltage (not shown) through a voltage converter 1 through supply lines 102a and 102b.
The voltage is supplied to the control unit 101 as an operating voltage after the voltage is converted by the voltage converter 103. The supply lines 102a and 102b
Is branched by branch lines 104a and 104b, and is connected to a connector C1 so that the power supply voltage can be supplied to the connection cable 200.

The voltage converter 2 is connected to the connection cable 200.
01, which supplies the power supply voltage to the voltage converter 201 via a connector C1.
02a and 202b, and operating voltage supply lines 203a and 203b for outputting the operating voltage for operating the peripheral device 300 converted by the voltage converter 210 to the peripheral device 300 via the connector C2.

With this configuration, the supply power supply voltage is
04a, 104b, the connector C1, and the power supply voltage input line 202a, 202b, when input to the voltage converter 201, the voltage converter 201 converts the supply power supply voltage to a voltage required for the operation of the peripheral device 300, The converted voltage is supplied to the operating voltage supply lines 203a and 203b and the connector C2.
To the peripheral device 300 via the.

As described above, the power supply voltage supplied to the PC main body 1 is directly led to the connection cable 200, and the power supply voltage for operating the peripheral device 300 is supplied by the voltage converter 201 provided in the connection cable 200. Since the voltage is converted into a voltage and the operating voltage is supplied to the peripheral device 300, it is not necessary to provide a voltage converter according to the operating voltage of the peripheral device 300 in the PC body 100. In addition, by preparing a plurality of types of connection cables 200 each having a voltage converter capable of outputting a different operation voltage, when the operation voltages of the peripheral devices 300 are different, the connection according to the peripheral device 300 is performed. Since it can be dealt with simply by replacing the cable 200, the PC main body 100 can be downsized because there is no need to provide a plurality of voltage converters corresponding to peripheral devices connected in the PC main body 100. Furthermore, in the case of peripheral devices having the same operating voltage, one connection cable can be shared, so that cost reduction can be achieved.

[0011]

As described above, according to the present invention, the power supply voltage input line for inputting the power supply voltage supplied to the control device to the connection cable connecting the control device and the peripheral device, A voltage converter for converting a power supply voltage input through a power supply voltage input line into an operating voltage for the peripheral device, and an operating voltage supply line for supplying the converted voltage as an operating voltage for the peripheral device. Since the control device is provided, it is not necessary to provide the control device with a voltage converter for converting the operating voltage to be supplied to the peripheral device, and the control device can be downsized.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining a connection cable according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining a conventional connection cable.

[Explanation of symbols]

REFERENCE SIGNS LIST 100 Programmable controller main body (PC main body) 102 a, 102 b Supply line 103 Voltage converter 104 a, 104 b Branch line 200 Connection cable 201 Voltage converter 202 a, 202 b Supply power supply voltage input line 203 a, 203 b Operating voltage supply line 300 Peripheral device C1, C2 connector

Claims (1)

[Claims] 1. A connection cable connected for transmitting and receiving data between a control device and a peripheral device, comprising: a power supply voltage input line for inputting a power supply voltage supplied to the control device; A voltage converter for converting a supply voltage input from a power supply voltage input line into an operation voltage for the peripheral device; and an operation voltage supply line for supplying the converted voltage as an operation voltage for the peripheral device. A connection cable, characterized in that: