JPS61262806A - Intelligent pulse card - Google Patents

Abstract

PURPOSE:To expand a processing function and to unify hardware by incorporating a reversible counter, a CPU and a memory in a card and loading the program of the CPU from the outside or a main CPU. CONSTITUTION:An intelligent pulse card (IP card) is provided with the CPU 12 and the main memory 13. A signal from a pulse encoder 8 fitted on a controlled system 7 is counted by a U/D counter 11, and given to the CPU 12. A control program inputted from a program loader 40 connected through an external memory 9 controlled by the main CPU 1 or an interface circuit 15 is stored in the memory 13. According to the program the CPU 12 processes the counted value, etc., of the U/D counter, and controls the controlled system 7 through an interface circuit 14 and I/O unit 20.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention is based on FA (Factory Automation).
1. An intelligent pulse card (hereinafter abbreviated as IP card) suitable for use with equal pressure equipment, in particular, it counts the pulse train sent from the controlled object and outputs a control signal corresponding to this count value. The present invention also relates to an IP card that controls the position of the control object.

[Conventional technology]

FIG. 5 is a block diagram showing a schematic configuration of a system using a conventional pulse cart. In this figure, l
2 is the main CPU, 2 is a people dispatch unit that accommodates II number of people dispatch information boards (input/output cards), 3 is a pulse card which is one of the input/output cards, and 4 is the main CPU IK program is manually operated. This is a program loader for.

Here, the pulse card 30 includes, for example, fa) one that has the function of a reverse counter (an opening for counting the pulse train from the pulse encoder attached to the controlled object), (bl) the count value of the pulse train is Main C4'
U1-? A device that has a function of turning on a switching element (not shown) on the output side when the value matches a preset value set by a ditub switch (path shown); There are some that have the function of outputting pulse fPI signals and analog signals for rotation control.

FIG. 6 is a front view showing the external configuration of the pulse card 3 having the function fb) above. In the figure, pulse trains of each phase of A and B of the pulse encoder are manually input to the pulse input terminal 5, and each time the count value of these pulse trains reaches a constant value of nt, g switching elements (not shown) are connected one after another. It is turned on and an on signal is supplied to the controlled object from the coincidence signal output #a6.

Incidentally, the program loader 4 has a thousand-board or the like, and is configured to directly input a program to the main CPU 1.

[Problem that the invention seeks to solve]

By the way, the conventional pulse card 3 mentioned above had the following drawbacks.

Ill Since the pulse card 3 having each of the above-mentioned functions fa) to fc) is configured as an independent card, it is impossible to unify the cards.

(2) Due to the size constraints of the pulse card 3, the processing functions were limited, for example, a card with the above fbl function could output 3 points, and a card with the function (C) could output 7 points. The present invention was made in view of the above circumstances, and an object of the present invention is to provide an IP card with expanded processing functions and unified hardware.

(Means for Solving the Problems) In order to solve the above-mentioned problem, the present invention incorporates a user power monitor, a CPU, and a memory in an IP card, and stores the program of the CPU. It is characterized in that it is loaded from the main CPU or from an external location.

[For production]

According to the above configuration, the functions of the IP card can be changed by changing the program of the CPU, so each of the functions described above can be realized with the same hardware, and the processing capacity can be improved. It becomes possible to aim for.

〔Example〕

Hereinafter, one embodiment of the invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an IP card according to an embodiment of the present invention, and FIG. 2 shows the outside (1) of the same IP card! FIG. 3 is a front view showing the configuration, and is a diagram showing a schematic configuration of a system using the same IP card. In these figures, the IP card IO accommodated in the outgoing crab unit 2 is connected to another outgoing crab unit 20 and the main CPUI. The 1ffi input/output crab unit 20 accommodates cards 21 to 24 similar to the input/output cards accommodated in the output crab unit 2. For example, 21 is a digital signal output card that controls a pulse motor, and 22 is a digital signal output card that controls a normal motor. An analog signal output card to control, 23 is a digital signal human power card that handles No. 1 from Ditsubu switch and proximity switch,
24 is an analog signal human power card that handles feedback signals from the motor and the like. And these cards are I
It is inserted between the P card 10 and the controlled object 7.

On the other hand, a pulse encoder 8 attached to the controlled object 7
2 series of human phase and B phase having a phase difference of tIQo and an enable signal instructing the counting of these pulse trains are outputted from the IP terminal via the connection terminal 8a in FIG.
U/1) (updayun) counter 11 in card IO
The tL6゜U/D power input 311 supplied to the input terminal of the tL6゜U/D power input 311 counts up the pulse train of the human phase when the A phase is in a phase leading state compared to the B phase, and counts down the pulse train when it is in a slow phase state. The own N& is supplied to the CPU 12. The CPU 2 performs the necessary processing according to the above-mentioned force value, instructions from the main CPU 1, and the program stored in the memory 13, forms a control signal, and connects the interface (2) path (1/14). ,” 1 and a half Kuta 20a
The control signal is supplied to the T/U unit 20 via (FIG. 2). Conversely, the signal from the I10 unit 20 is taken in via the r/F14.

t&, the CPU 2 takes in a manually entered program from the program loader 40 via the flattener 40a (FIG. 2) and the I/F 15, and loads it into the memory 13.

In addition, in FIG. 7, 9 is the external storage device of the main CPUI,
16 is an I/F inserted between the main CPU I and the CPU 12, the second #! In Xi, 25 is an indicator light that displays the internal status of the IP card 10.

In such a configuration, the program can be loaded into the IP card 10 using the following λ methods.

■ Program loading from main CPUI.

As shown in FIG. 1, when a boot strap is manually operated from a program loader 4 connected to the main CPU 1, the main CPU 1 reads a designated program from an external storage device 9 and supplies it to the C'PU 12 via a T/F 16. do. The CPU 12 writes the sent program to the memory 13 and completes the predetermined program loading.

+2+ Program loading from outside N's program loader 40.

The program is manually loaded directly onto the IP card 10 by hitting the 1000-board of the program loader 40. In this case, the program loader 40 stores the contents of the memory 13.
Each byte is displayed.

In this way, by the method of (2), the rP card l
A program that determines the control contents of O is loaded. Then, depending on this program, the function as a preset counter, positioning control function, or PED
It becomes possible to programmably specify many types of functions such as control functions.

In addition, since a wide variety of cards such as input/output cards 21 to 24 can be connected to the IP card 10, the number of outputs of the input/output cards can be increased, and the output point of the preset function can be connected to the g-point board. The output point of the positioning function can be set to two or more points.

〔Effect of the invention〕

As explained above, the present invention incorporates a reversible counter, a CPU, and a memory in an IP card, and
'Since the PU program is loaded from the main CPU or externally, the following effects can be achieved.

(1) It is economical because the 8-doware of the 1P card can be converted into M--f.

12) Optimal control for the controlled object can be realized by a program, and the load on the main CPU can be reduced.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an IP card according to an embodiment of the present invention, FIG. 2 is a front view showing the external configuration of the IP card, and FIG. 3 is a schematic configuration of a system using the IP card. Figure 5 is a diagram for explaining the program loader to the same IP card, and Figure 5 is a block diagram showing the schematic configuration of a system using a conventional pulse card.
FIG. 6 is a front view showing the external configuration of a conventional pulse card. l... May/cPU (@l's central processing unit), 7...
・Controlled object, 8...Pulse encoder, lO...I
P card, 11... U/D counter ('l'11 reverse counter), 12... CPU (second central processing unit),
13... Memory (storage means), 14... I/Ft input/output interface), 21-24... Input/output card.

Claims (2)

[Claims] (1) A pulse card that is connected to a first main central processing unit and that controls the controlled object based on a pulse train that is output in accordance with the movement of the controlled object, wherein the pulse card is a reversible device that counts the pulse train. a counter, a second central processing unit that outputs a control signal based on data from the first central processing unit and a count value of the reversible counter, and a storage unit that stores a program for the second central processing unit. An intelligent pulse card, wherein the second central processing unit loads the program from the first central processing unit or externally. (2) The pulse card has an input/output interface connected between an input/output card directly connected to the controlled object and the second central processing unit. Intelligent pulse card described in item 1.