JPH05189102A - Id switch setting method for io equipment - Google Patents

Abstract

PURPOSE:To prevent work error as well as saving labor for setting by deciding short open by the ID setting means of a mother board without changing the setting of an ID switch in an IO equipment when changing the mounting position of the IO equipment or exchanging the IO equipment because of a fault. CONSTITUTION:A bus 11 for connecting plural IO equipments 1 is composed of a mother board 12 composed of a printed circuit board, and this mother board 12 is provided with plural ID setting means 13 corresponding to ID switches 2 built in the plural IO equipments 1. Then, the respective IO equipments 1 and the bus 11 are connected and for each IO equipment 1, a connector 16 is provided to connect a signal line 15 for ID setting of the ID switch 2 built in this IO equipment 1 to the ID setting means 13. Since the ID setting means 13 of the mother board 12 decides short open, it is not necessary on the side of the IO equipment 1 to change the setting of the ID switch 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method in which a plurality of IO devices are connected by a bus and an ID switch (IDENTIFY switch) for identifying each IO device is set.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
When a plurality of IO devices 1 are connected, such as O device # 1, IO device # 2, IO device # 3, the ID switch 2 for identifying each IO device 1 is provided in the IO device, When the IO device 1 is mounted on the bus 3, a switch setting that determines short / open depending on whether or not a short pin is mounted on the ID switch 2 is performed.

[0003]

In FIG. 2, for example, when the IO device # 1 is mounted at the mounting position of the IO device # 3, it is necessary to change the setting of the ID switch 2, and there is a drawback that the mounting change is troublesome. there were. In addition, even when the IO device 2 fails and needs to be replaced, the setting needs to be changed, and there is a drawback in that it is easy to cause a human error in working under such a tense situation.

Therefore, the present invention provides an ID switch setting method for an IO device that does not require the setting change of the ID switch built in the IO device when the mounting position of the IO device is changed or when a failure occurs. With the goal.

[0005]

Means for Solving the Problems ID of IO device of the present invention
In the switch setting method, a bus for connecting a plurality of IO devices is configured by a mother board made of a printed circuit board, and the I that is built in the plurality of IO devices on the mother board.
A plurality of ID setting means corresponding to the D switch are provided, and each IO device is connected to the bus of the motherboard, and the ID setting signal line of the ID switch built in this IO device is connected to the ID setting means of the motherboard. A connector for each IO device is provided, and the ID of the motherboard
It is characterized in that setting of the ID switch on the ID device side is unnecessary by determining short / open by the setting means.

[0006]

According to the method for setting the ID switch of the IO device of the present invention, when the mounting position of the IO device is changed or the IO device is replaced at the time of failure,
Since the setting can be changed by the ID setting means of the motherboard without changing the setting of the ID switch in the IO device, the setting change is not troublesome and a work error can be avoided.

[0007]

The present invention will be described in detail below with reference to the embodiments shown in the drawings.

1 (a) and 1 (b) show an embodiment of a hardware configuration for executing the ID switch setting method for IO equipment of the present invention. In FIG. 1A, a plurality of IO devices 1, for example, IO device # 1, IO device # 2, IO device # 3.
A bus 11 for connecting to is composed of a mother board 12 made of a printed circuit board, and
A plurality of ID setting means 13 corresponding to the ID switches 2 built in the plurality of IO devices 1 are provided. Also, individual IO
Connect the device 1 and the bus 11 of the motherboard 12 to the bus signal line 1
4 and connect the ID setting signal line 15 of the ID switch 2 built in the IO device 1 to the I of the motherboard 12.
A connector 16 connected to the D setting means 13 is provided for each IO device 1.

If a plurality of IO devices are connected to the bus with the above-mentioned configuration, the ID switch 2 in the IO device 1 can be set when the mounting position of the IO device 1 is changed or when the IO device 1 is replaced at the time of failure. Instead of changing, the motherboard 1 in which the ID switch 2 and the ID setting signal line 15 are connected by the connector 16
In the ID setting means 13 of No. 2, as shown in FIG. 1B, the setting can be changed by determining the short or open by the short pin 17. Therefore, it is possible to solve the problems of the related art, such as not requiring time and effort to change the settings and avoiding work mistakes.

[0010]

As described above in detail, according to the present invention, a bus for connecting a plurality of IO devices is composed of a mother board composed of a printed circuit board, and the IDs incorporated in the plurality of IO devices are provided on the mother board. A plurality of ID setting means corresponding to the switches are provided, and each IO device is connected to the bus of the motherboard, and an ID setting signal line of an ID switch built in this IO device is connected to the ID setting means of the motherboard. A connector for each IO device is provided, and the ID setting means of the motherboard determines whether the short or open is made, so that the ID on the IO device side
I characterized by making it unnecessary to change switch settings
By realizing the ID switch setting method for O equipment,
When changing the mounting position of the IO device or replacing it at the time of failure, the setting can be changed by determining the short / open by the ID setting means of the motherboard without changing the setting of the ID switch in the IO device. It is possible to solve the problems of the prior art, such as not requiring time and effort for setting and avoiding work mistakes.

[Brief description of drawings]

FIG. 1 shows an embodiment of a hardware configuration for executing an ID switch setting method for an IO device according to the present invention, and FIG.
Is a block diagram of the overall configuration, and FIG.
It is an enlarged view which shows the connection of an ID switch and ID setting means in (a).

FIG. 2 is a block diagram for explaining an ID switch setting method in a plurality of IO devices connected to a bus according to a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... IO device 2 ... ID switch 11 ... Bus 12 ... Motherboard 13 ... ID setting means 14 ... Bus signal line 15 ... ID setting signal line 16 ... Connector 17 ... Short pin

Claims (1)

[Claims] 1. A bus for connecting a plurality of IO devices is composed of a mother board made of a printed circuit board, and the mother board is provided with a plurality of ID setting means corresponding to ID switches built in the plurality of IO devices. Individual IO
Each IO device is provided with a connector for connecting the device to the bus of the motherboard and for connecting the ID setting signal line of the ID switch built in the IO device to the ID setting means of the motherboard, and setting the ID of the motherboard. By determining short / open by means, I
An ID switch setting method for an IO device, characterized in that the setting change of the ID switch on the O device side is unnecessary.