JPH02280256A - Detecting system for connecting position - Google Patents

Abstract

PURPOSE:To freely decide the arrangement of each adaptor part by cascade- connecting a signal line for position dettection of (n) bits to each adaptor part, and shifting a position detecting signal sent to the signal line by every bit at each adaptor part. CONSTITUTION:The control part Fo of a processor part Po sens a control signal, etc., to the control parts Foo, Fo1, Fo2.... of the adaptor parts Aoo, A01, Ao2... via an internal bus Boi consisting of plural signal lines, and an adaptor part number is attached on the control signal so as to identify to which adaptor part it corresponds. The control part of each adaptor part compares a sent adaptor part number attached on the control signal with the connecting position number of its own, and performs internal control when coincidence is obtained. Thus, the adaptors Aoo-A07 can detect to which position it is connected in the inside of a unit Co and the processor part Po controls each adaptor part individually, which eliminates such limitation that the unit can only be connected in a decided connecting mode.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is applied to an information processing device that includes a processor section and a plurality of adapter sections controlled by the processor section.

〔overview〕

The present invention provides a system in which a control section provided in each of a plurality of adapter sections connected in cascade to one processor section via an internal bus detects the connection position on the internal bus. By cascade-connecting detection signal lines and shifting the position detection signal sent to these lines by 1 bit at each adapter section, the arrangement of each adapter section can be determined freely. .

[Conventional technology]

In the conventional technology, the position of each adapter part with respect to the processor part is determined according to a predetermined implementation form, or the connection position is detected by setting a switch means or the like.

[Problem that the invention seeks to solve]

However, the conventional connection position detection method has the drawback that it is possible to connect only to a predetermined connection position, which limits system construction. Furthermore, in the case where the position number is determined by setting the switch means, etc., there is a drawback that errors are likely to occur in the setting of the switch means. Furthermore, when a plurality of the same adapter sections are connected to one processor section, even if the adapter sections themselves are the same, the settings of the switch means are different.

SUMMARY OF THE INVENTION An object of the present invention is to provide a connection position detection method that allows an adapter part to be freely connected without being restricted to the actual connection position.

[Means for solving problems]

According to the present invention, one unit includes one processor section and a plurality of adapter sections connected in cascade to the processor section via an internal bus, each adapter section is provided with a control section, and this control section is configured to control the own adapter. In the method of detecting the connection position on the internal bus of the adapter, an n-bit (n is an integer of 2 or more) position detection signal line is provided in parallel with the internal bus, and each adapter
The processor section includes a decoder that detects the input value from the previous stage of the bit signal line and supplies it to the control section, and an encoder that shifts the input value from the previous stage by 1 bit and outputs it to the subsequent stage. It is characterized by including a position signal generation circuit that provides an initial value to an n-bit signal line.

[Effect]

The initial value of the position signal sent from the processor section to the signal line is shifted by 1 bit in the control section of the first adapter section connected in cascade and sent to the control section of the subsequent adapter section. This is further shifted by 1 bit,
The data is sent to the next subsequent control unit. That is, in each control section, the input position signal is shifted by 1 bit and output. Therefore, depending on the connection order of the signal lines, each control section can detect its connection position by itself.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of the essential parts of an embodiment of the present invention, and FIG. 2 is a diagram of the overall configuration of the embodiment.

In this embodiment, units C65C8 are connected by a general-purpose bus CB, and one processor section P is included in the unit co. control unit F. and 8 sets of adapter part A. 8% Ao
7, each control unit F. a-F o t is internal bus B. Q ""' 806 cascades.

Here, the feature of the present invention is that this internal bus B0
~ Signal line L for 3-bit position detection parallel to BOY
o1L1 and L2 are provided, and each adapter part Ao. -,A,
o7 is a decoder Doo-I that detects the input value from the processor section or adapter section in the previous stage of L2, and supplies this to the control section Foo=Fot as a position number. ) ot, and an encoder E that applies a 1-bit shift to the input value from the previous stage and outputs it to the subsequent stage. o ""' E O7,
Processor section P. The control unit F has signal lines Lo and LI.
, L2 includes a position signal generation circuit SG that generates position signals of "0", "0", and "0" as initial values.

The configuration of this unit C8 is the same for other units C1 connected by the common bus CB.

In FIG. 1, adapter part A of unit C8. 7 to the program section P1 of the unit C1. , LI , L2
and internal bus B. Although the terminals are shown as being drawn in, this is because each adapter part has the same connection structure, and the control part F of the terminal part processor part P1 drawn into the processor n P + , not connected to. More signal lines. Three SL1 and L2 are required because there are eight adapter sections in one unit, and four are required when a maximum of 16 adapter sections are connected in one unit.

Next, we will show how each adapter section detects the connection position in the unit. First, the processor part Pa goes to the adapter part in the latter stage. The connection position number 0 is displayed in binary and output ("0", "0", "O"). Adapter part A
In ao, the input position number is decoded from a binary number to a decimal number by a decoder D0°. According to the decoded position number, the control unit F of the adapter unit Aoa. 0 recognizes its own position as number 0.

The output of decode D0° represents a value 1 greater than the value represented by the encoder E. Connected to the 0 input. Therefore, in this case, "1" is input to the encoder. Encoder E. 0 encodes the manually entered value "l" into a binary number ("0", "0", "1") and sends it to the subsequent adapter section A. , output to. Here, in this embodiment, the signal is outputted to the subsequent adapter unit AO+ as a decoder. Here, in this embodiment, the integrated circuit L31 serves as a decoder.
38, and an integrated circuit LS148 and an inverter are used as encoders. The integrated circuit LS138 outputs the manually entered binary number by converting only the output pins representing the value to "0" and converting the largest value among the values represented by the manually entered binary numbers into a binary number. However, since the logic of the output is negative, in this embodiment, an inverter for inverting it is connected to the output of the integrated circuit LS14g, and the output of the inverter is used as the output of the encoder. Similarly, adapter part A
01 and AO2 can also recognize the connection positions as No. 1 and No. 2, respectively.

Control unit F of processor BPo. is an internal bus B consisting of multiple signal lines. i through adapter part A. . ,A,,S
Send control signals etc. to the control unit of Ao and . An adapter part number is added to the control signal so that it can be identified to which adapter part the control signal is directed.

The control section of each adapter section compares the adapter section number added to the sent control signal with its own connection position number, and if they match, performs its internal control in accordance with the control signal. In this way, adapter A. o = A o t
It is possible to detect at which position in the unit 1-C6 the processor section Pa is connected.
can control each adapter part individually. In the same manner as described above, the adapter sections of units CI and C2 can detect to which position each is connected within the human output control section. Further, since the signal line connections between the processor section or the adapter section are the same no matter where the unit is mounted within the casing, it can be mounted at any position within the casing. Furthermore, as shown in FIG. 3, a processor section P is provided. , P3, and P2 are internal buses B because the input and output sides of the terminals of each signal line are not internally connected.

i, B, i-B, 11! Each is separated.

〔Effect of the invention〕

As explained above, according to the present invention, there is no longer a restriction that units can only be connected in a predetermined connection form.

Further, since it is not necessary to set the switch means depending on the connection position, errors that occur when setting the switch means are also avoided.

Furthermore, even when a plurality of the same adapter sections are connected to one processor section, there is no need to modify each adapter section.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention. FIG. 2 is an overall explanatory diagram of the embodiment. FIG. 3 is a connection diagram of signal lines in the embodiment. Aoo~A o q-A n + "'Adapter part, B
oo~Bhi...Internal lotus, CB...General purpose lotus, D
o0~D. ? ""' D h□・・・Decoder, E
oo = E atEh i-encoder, F. ~Fh, Foo-F a7Fnt-control unit, Lo
%Ll %L2...Signal line, P0-P,...Processor section.

Claims (1)

[Claims] 1. One unit includes one processor section and a plurality of adapter sections connected in cascade to the processor section via an internal bus, each adapter section having a control section, In a method in which the unit detects the connection position of its own adapter unit on the internal bus, n bits (n is an integer of 2 or more)
A signal line for position detection is provided, and each adapter section includes a decoder that detects the input value from the previous stage of this n-bit signal line and supplies it to the control section, and a 1-bit input value to the input value from the previous stage. and an encoder that applies a shift and outputs the signal to a subsequent stage, the processor section including a position signal generation circuit that applies an initial value to the n-bit signal line.