JPH05226800A - Board for sequence controller and sequence controller - Google Patents

Abstract

PURPOSE:To reduce the cost, and save the spacing, of a sequence controller by mounting a, first bus extension connector on one surface, and by mounting a second bus extension connector which is connectable with the first connector at a location corresponding to the first connector on another surface. CONSTITUTION:A plurality of elements 2 constituting an input/output circuit are arrayed at the center of a component surface of an I/O board 40, and a plurality of external interfaces 3 are arranged along both edges of that surface in a direction of X with the elements 2 sandwiched between them. An upper connector 11 constituting a bus extension connector 10 is mounted on one end of that surface in a direction of Y, and a lower connector 12 which also constitutes the connector 10 is mounted at the same position as the connector 11 on a soldered surface. Both the upper connector 11 and the lower connector 12 are disposed at a location where a reference position 13 of these connectors is defined by a distance I1 from a fixed hole D of the board 40 in the direction of X and a distance I2 from the hole in the direction of Y.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sequence controller board and a sequence controller.

[0002]

2. Description of the Related Art A conventional sequence controller board, as shown in FIG. 5, has a motherboard 50 on which a CPU board 51, I / O boards 52, 53, 54, etc. are mounted and connected by a bus. As shown in 6, CPU
There is one in which the board 60 and the I / O boards 61, 62 and 63 are bus-connected by the connectors 64 and 65 and the cable 66.

[0003]

Among the above-mentioned conventional sequence controller substrates, the one shown in FIG.
Motherboards are needed, and different motherboards with different lengths are prepared for each number of I / O boards, or motherboards with unnecessary lengths are installed, resulting in high cost and large space. There are drawbacks.

Further, the structure shown in FIG. 6 has the disadvantages that the cost is high and a large space is required because a connector and a cable are required.

An object of the present invention is to provide a sequence controller substrate and a sequence controller which are low in cost and save space.

[0006]

A sequence controller board according to the present invention has a first bus expansion connector mounted on one surface thereof and a mounting position of the first bus expansion connector on the other surface thereof. A second bus expansion connector connectable to the first bus expansion connector is attached to the position.

This sequence controller substrate includes
Some have a circuit of a CPU board or an I / O board.

The sequence controller of the present invention is characterized in that it has at least two sequence controller boards, and these sequence controller boards are connected by first and second bus expansion connectors.

[0009]

Since the sequence controller boards are directly connected to each other by the bus expansion connector, the space is reduced, and the cost of the bus connecting mother board and cables is eliminated.

[0010]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the present invention.

On the component side of the I / O board 40, a plurality of elements 2 forming an input / output circuit are arranged in the center, and a plurality of external interfaces 3 are arranged at both ends in the X direction across the element 2. Has been done. An upper connection connector 11 that constitutes the bus extension connector 10 is attached to one end in the Y direction, and a lower connection connector 12 that constitutes the bus extension connector 10 is attached at the same position on the solder surface. It is installed. In both the upper connection connector 11 and the lower connection connector 12, the reference portion 13 is I / O.
It is located at a distance l _{1 in} the arrow X direction and a distance l _{2 in} the arrow Y direction from the fixing hole D of the O board 40.

2 (a) and 2 (b) are detailed views showing a bus expansion connector 10 comprising an upper connecting connector 11 and a lower connecting connector 12. As shown in FIG.

The upper connector 11 is provided with a plurality of pins 11b on its lower side, and each pin 1b is provided on the upper side.
Holes 11a which are electrically connected to the respective 1b and into which the pins 11b of the other upper side connecting connector 11 can be inserted respectively.
Is provided. The lower connector 12 has a slightly larger hole 12a into which each pin 11b of the upper connector 11 can be inserted, and is formed in a shape in which the upper connector 11 can be inserted and fixed. ..

FIG. 3 is a perspective view showing an example of connection of a plurality of substrates using this embodiment.

In this example, the boards of the CPU board 30 and the I / O boards 41, 42, 43 are sequentially laminated, and the four corners are fixed with screws via the connecting members 6, 7. Then, the bus expansion connector 10 shown in FIG.
Are connected to each other by a bus. The connecting member 6
Has female threads formed on both ends thereof, and the connecting member 7 has male threads formed on one end and female threads formed on the other end, which are sequentially connected and screwed at both ends. However, when the distance from the CPU board 30 to the I / O board 42 is short, the connecting members 6 and 7 can be hollow members and can be fixed with one screw.

FIG. 4 is a block diagram showing a configuration example of the sequence controller.

This sequence controller comprises a CPU board 30 and I / O boards 40, 41, 42.
They are mutually connected by a bus 31 via the bus expansion connector 10.

[0019]

As described above, according to the present invention, by directly connecting the sequence controller boards to each other with the bus expansion connector, space can be saved and
This eliminates the need for a bus connection motherboard and cables, and has the effect of reducing costs.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

2A and 2B are detailed views showing a bus expansion connector.

FIG. 3 is a perspective view showing a connection example of a plurality of substrates.

FIG. 4 is a block diagram showing a configuration example of a sequence controller.

FIG. 5 is a diagram showing a conventional example.

FIG. 6 is a diagram showing a conventional example.

[Explanation of symbols]

 10 Bus Expansion Connector 11 Upper Connection Connector 12 Lower Connection Connector 13 Reference Part 30 CPU Board 31 Bus 40, 41, 42 I / O Board

Claims (4)

[Claims] 1. A first bus expansion connector is mounted on one surface, and is connected to the first bus expansion connector at a position on the other surface with respect to a mounting position of the first bus expansion connector. A sequence controller board having a possible second bus expansion connector attached thereto. 2. The sequence controller substrate according to claim 1, which has a circuit of a CPU board. 3. The sequence controller board according to claim 1, which has an I / O board circuit. 4. A sequence controller comprising at least two sequence controller boards according to claim 1, wherein the sequence controller boards are connected by first and second bus expansion connectors.