SU970351A1 - Device for operating communication with control programs - Google Patents

Description

(54) DEVICE OF OPERATIONAL COMMUNICATION WITH MANAGING PROGRAMS

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The invention relates to computing technology and is intended for use in automatic control systems for electrical and logical parameters of electronic units and devices, and control means for process equipment.

The well-known modern automatic control systems are implemented, as a rule, on the basis of mainframe computers or control mainframes, which allows creating effective multi-station monitoring and control systems in which the central processing unit takes over the central processor, while A post connected to this processor performs simple monitoring and control operations. In this connection, non-standard devices, such as multi-station systems of technological equipment, are connected with a computer via selector and multiplex channels.

In multi-station monitoring and control systems, the EC-7077 with a writing mask, designed in the EC computer for on-line communication of the system with the operator, can be used to connect the operator with computer control programs. This device includes a signal interface unit via a multiplex channel for the physical and logical matching of information signals and control.

5 with a multiplexed channel of a computer, having an interface built on the principle of common ground and allowing up to 255 devices to be connected to the channel. The interface unit is connected with the control unit, which is a microprogrammed automaton for generating sets of pulses that control the operational memory intended for character-by-character reception of information from the keyboard unit, outputting it to the print unit and to the multiplex 15 channel through the standard interface unit. The keyboard unit is designed to press the keys to certain codes when entering information directly by the operator and is associated with the control unit for the purpose of time synchronization of work and receiving control commands by the keyboard, as well as RAM for transmitting character codes to it. Random access memory in turn SR.CH i.; I with a block

print, intended for registration of information in the form of a hard copy 1.

The use of the EC-7077 device as a means of operational communication in process control systems requires the exchange of information in the following sequence. The operator, using the typewriter of the EC-7077 device, is in exchange with the control program for interrupting I / O, which, in turn, receiving control directives, is in exchange with the technological device for operations through the multiplex channel. With simultaneous, ie, multiplexed, operation of several technological panels, this exchange mode is practically unacceptable for real-time systems, since the EC-7077 device, while waiting for an operator directive, blocks all work on the multiplex channel.

The closest in technical sushi to the present invention is the EC-7927 display device, containing a standard interface block, designed to communicate with a channel on a logical and physical interface, associated with a control unit and a random access memory device for receiving information from multiplex channel or from the keyboard unit, storing and issuing information to the sign generator unit. The latter is designed to generate pulses for illumination of a beam of a cathode-ray tube during the formation of symbols and is associated with a scanner that serves to generate signals that control the movement of the beam.

At the initiative of the computer, information from the communication channel with the help of the control unit is recorded in RAM, the contents of which are permanently displayed on the screen of the Electron-ray Tube using the sign generator and the scanner. The information to be transferred to the computer is recorded in the RAM by the operator from the keyboard under the control of the control device. Recorded information is also permanently displayed on the screen of a cathode ray tube. At the operator's initiative, the display device places a service request on the communication channel, and the computer begins to describe the information provided by the console.

Unlike the EU-7077 device, based on the use of a typewriter, the EU-7927 display device provides the ability to more quickly display information, as well as its full or partial correction by the operator 2.

However, both described devices can serve only for purposes of communication with a program embedded in a computer, their use as operational communication devices is limited to software control of technological equipment connected to

multiplex or selector communication channels with a computer. Due to the fact that in the described devices, the communication of the control and display functions is provided only through

multiplex channel, the possibility of automatically recording and displaying service information directly from technological equipment nodes is excluded, and, thus, the possibility of controlling physical communications with the help of operational communication devices

 processes in technological equipment in critical situations requiring minimal reaction time. The possibility of quick and rapid manual recording of proprietary information is also excluded; it is necessary in such situations.

The purpose of the invention is to expand the functionality of the operational communication device.

The goal is achieved by the fact that the device for online communication with control programs, contains a signal conditioning unit, the first outputs of which are connected to the first inputs of a random access memory, the first outputs of which are connected to the first inputs of the display unit and the signal matching unit, and the second the inputs and outputs of the random access memory, the signal conditioning unit and the manual information input unit are connected respectively to the first outputs and inputs

0 of the control unit, a switch, an automatic information input unit, including a write trigger, a read trigger, an external device request trigger, five drivers, the first inputs of the switch are connected to the second outputs of the manual information input unit, the second inputs are entered through the first, second, third and the fourth shapers of the automatic information input unit — with the first group of information inputs of the device; the first outputs of the switch — with the third inputs of the random access memory; the third outputs; The second and second outputs of the control unit are connected to the control outputs of the device, the inputs of the write triggers, the read and request of the external device of the automatic information input unit are connected to the second group of information inputs of the device, the third inputs and the second outputs of the switch are connected to the third outputs and the second inputs of the control unit, respectively , the third inputs of which are connected to the outputs of the write, read and request triggers of the external device, the second inputs and outputs of the signal matching unit are connected to the master nymi tire mi forward control channel

The introduction of new nodes and connections allows you to continuously display current information, change it with the help of a manual input unit, issue it to the digital computer at the request of the operator, and automatically record information from the monitoring device when it is directly displayed. The drawing shows a functional diagram of an on-line communication device with a control program. The device comprises a manual input unit, an automatic input unit 2 of the switch 3, a RAM 4, a display unit 5, a control unit 6, a signal matching unit 7. The manual input unit 1 includes a read trigger 8, the control inputs of which are connected to a button on the I panel, and the output is connected to the first input group of the switch 3, a recording trigger 9, the control inputs of which are connected to a button on the panel of the 1 block, The switch is connected to the first group of inputs of the switch 3, logic element 10, the first input of which is connected to the button on the panel of the manual input unit, the second input connected to the output of unit 6, and the output connected to the input of the imaging unit II, the output of which is connected to the input of unit 6. In block 2 automatic input enters trigger 12 record, the installation inputs of which are connected to the process panel, and the output is connected to the input of block 6, trigger 13 reading, trigger 14 request external device, the installation input of which is connected to the output of the driver 15, the reset input is connected to the output of block 6 and the output is connected to the input of the block 6, the driver 15, the input of which is connected to the process panel, the drivers 16-19, the inputs of which are connected to the process panel and the outputs to the second group of inputs of the switch 3. Composition to The switch 3 includes logical elements 20-33, the first group of inputs of which are connected to the outputs of block 1, the second group of inputs to the outputs of block 2, the control inputs are connected to the outputs of block 6, and the outputs to the inputs of RAM 4 and block 6. B The composition of RAM 4 includes logic elements 34-40, the inputs of which are connected to the outputs of the switch 3, the outputs of block 6 and the outputs of block 7, and the outputs are connected to the input of the bis control, information and address inputs of the accumulator 41, the outputs of which are connected to technological remote control, the inputs of blocks 7 and 5. The composition of the Display 5 displays the display registers 42-46, the information inputs of which are connected to the information outputs of RAM 4, the control inputs are connected to the outputs of block 6, and the outputs are connected to indicator devices (LEDs or incandescent bulbs) on the operator's nanevTH. The control unit 6 includes the request trigger 47, logic elements 48-54, the inputs of which are connected to the outputs of the blocks 1, 2, 7, shapers 55-59, the input of the shaper 55 connected to the inverse output of the trigger 47, the inputs of the shapers 56 and 57 connected to the outputs of logic elements 49 and 51, respectively, the input of the generator 58 is connected to one of the outputs of the switch 3, the input of the generator 59 is connected to the direct output of the trigger 47, the outputs of the drivers are connected to the control inputs of the block 2, RAM 4, 5, with the technological remote control and displayed on ind Ikatsiya: the address counter 60, one of the control inputs of which is connected with the output of logic element 54, and the second with the inverse output of the driver 57, the output of the counter is connected with one of the control inputs of RAM 4; a controlled decoder 61 of the address of the display, the inputs of which are connected to the output group of RAM 4, and the output - to the group of inputs of block 5. The block 7 of the matching includes amplitude receivers (UPM) 61-69, the inputs of which are connected to the outputs of the block 6 and RAM 4, and the outputs are connected to the main lines of the direct control channel. The operation of the operating communication device with the control program begins with the filling of the accumulator 41 with the control information. To do this, the operator on the switch. Addresses (PA) sets the desired address, on the toggle switches WID dials the necessary information and presses the record button. The address typed on the user agent through the elements 22, 26 and 30 of the switch 3 (in the absence of prohibitive signals from elements 47 and 48 of block 6) goes to the first input of element 37 of RAM 4, and from its output to the address input of drive 41, as well as to the information inputs of the decoder 61 of block 6. Information dialed on the toggle switches of the manual input block, via elements 23, 27 and 31 of switch 3 (in the absence of prohibitive signals from elements 47 and 48 of block 6), goes to the first input of element 38 of RAM 4, and its output - to the information inputs of the drive 41. Pressing the button "Record calls installation of the trigger 9, the signal from the output of which through the elements 21, 28 and 32 of the switch 3 enters (in the absence of prohibitive signals from circuits 47 and 48 of block 6) to the first input of the logic element 39 of RAM 4, and from its output to the controlling one input of accumulator 4. A register 42 is used to display the contents of any cell of accumulator 41 in block 5, the information inputs of which are connected to the outputs of actuator 41. When the operator presses the "Read" button, a trigger 8 is set, the signal from which is output through logic elements 20, 29 and 33 switches 3 stumbles on the first input member 40 RAM 4, and its outputs - to

the control input of the accumulator 41, which causes the appearance at its outputs of information located at this address (the transmission path of address information from the manual input block is described above). At the same time, the signal from the output of the logic element 20 of the switch 3 is fed to block 6 at the input of the imaging unit 58, from which output the signal generated in time and in duration goes to the control input of the register 42 of unit 5. Thus, the information read at the current information register is highlighted on the display elements.

Having performed the write operations to the RAM, the operator from block 1 establishes a connection with the control program. To do this, pressing the Start button (in the absence of a blocking signal from block 6) sends a signal to element 10 of block 1, from the output of which the signal goes to the input of shaper 11, and from the last output to the first input of element 53 of block 6. Signal from its output sets the trigger 47, the signal from the direct output of which enters through the driver 59 to the input of the FEM 67, and from the output of the latter through the trunk external signal bus into the direct control channel. In addition, the signal from the direct output of the trigger 47 is fed to the input of the MMS 68, the output of which is connected to the trunk bus of the external blockage, and through it to the input of the UPS 63, as well as the signal from the direct output of the trigger 47 through the driver 59 removes the blocking from UPM 69, thereby logically connects to its inputs the information outputs of the accumulator 41 RAM 4. In addition, the signal from the direct output of the trigger 47 is fed to the second inputs of logic elements 34, 35 and 36 of RAM 4, allowing the passage of information from block 7 to the first input element 35 and from block 6 to the first in One of the elements 34 and 36, as well as logically connects to the inputs of the elements 51 and 52 of the block 6, the outputs of the FDA 64-66, the inputs of which are connected to the trunk buses of the direct control channel.

The inverse signal from the output of the trigger 47 is fed to the second inputs of the elements 30-33 of the switch 3, thereby blocking the passage of information from blocks 1 and 2 at the time of accessing the control program, and also enters the process panel to report the random access memory 4 , and to the second input of the element 40 of RAM 4, and from its E5-output - to the control input of the accumulator 41.

After establishing communication with the control program by sending an external interrupt signal to the direct control channel, information is read and written to the memory 41 of RAM 4, for which, via the direct control channel, the outputs of the MRF 69 are read into the memory of the machine, and to switch the address The RAM arriving from the counter 60 of the block 6 sends signals to the input of the UDM 64 and 65, which causes the recording of the information supplied to the input of the UTP 63 from the storage memory, and the end of the recording signal switches the counter 60 in the block 6.

To terminate the communication, the control program sends signals to the EMP 65 and 66, from whose outputs through logic elements 52 and 54 the trigger 47 is reset.

When establishing communication with the control program from block 2, the latter receives a request from the process panel through shaper 15 and stores it on trigger 14. With a free direct control channel (there is no blocking signal from the output of element 50 of block 6), the output signal of trigger 14 through elements 49, 56 and 53 causes the installation of the trigger 47. Further operation of the control unit and the control program is similar to that described above. At the end of communication, the inverse signal from trigger 47 through shaper 55 of block 6 clears trigger 14 and enters the process panel to signal the end of communication with the control program.

When writing information to RAM 4 from block 2, trigger 12 is installed in block 2 (its control inputs are connected to the process panel), the output of which goes to block 6 to the first input of element 48, which causes a logical disconnection of the first group of inputs of switch 3 from unit 1 and the logical connection of the second group of inputs of the switch 3 to unit 2.

The address information comes from the process panel through the driver 16 to the input of the element 24 of the switch 3. Control information through the driver 18 is supplied to the element 28 of the switch 3. The recorded information comes from the technology panel through the generator 17 to the input of the element 25 com.motor 3. Further passing control and information signals is analogous to manual input.

When reading information into the process panel, the trigger 13 is set, and the read control signal through the imager 19 is fed to the input element 29 of the switch 3.

The drive 41 RAM 4 is made on the chips 155 RU2 and has a volume of 16 eight-bit words. For optimal use, on is divided into 4 fields by function: field of operation, control, control, communication. In order to optimally display the contents of the RAM, only the first words of these fields, which carry more general information, are presented on the display (the remaining words of the fields have a clarifying character). Because of this,

block 5 there are 4 registers 43-46 (made on chips 155 TM2), the information inputs of which are connected to the outputs of the accumulator 41 RAM 4.

When a signal accumulator 41 arrives at the control input from any source, the signal enters block 6 at the decoder 61, and if the address coming from RAM 4 belongs to the above four, it generates a control signal that controls the entry into one of the four indication registers of block 5 of information recorded at this address.

Thus, the introduction into the device of operative communication of the automatic input unit and the switch allows, at the required time, to record information directly from the technological equipment units and display it on the display unit, informing the operator about critical situations and the need to perform certain actions, as well as install operative communication with the control program by sending an external interrupt signal to the direct control channel. In addition, the communication of the RAM with the process panel allows the information stored in the RAM to be used as a control for the process panel, and this information can be recorded both by the operator and by the control program when establishing communication with it.

The proposed design of the operative communication device by the control program makes it possible to increase the control flexibility and expand the functional set of operations performed on each process console of a multi-station system.

Thus, the proposed operative communication device with control programs provides a wide possibility for a single system to use a computer to control various non-standard technological devices (computer numerical control machines, bench equipment for controlling electronic and digital blocks, instruments, systems, automated warehouses, automated lines). , paint work, etc.) and eliminates the need for alterations of control programs, such as the system program "Supervisor Switching on new types of technological devices or changing their number. At the same time, all the extensive mathematical capabilities of the EC computer are preserved. When a computer is underloaded on computer centers of enterprises or there is no necessary number of standard external devices for operation in three

sections of the memory of the program of control of the system of technological panels with operating communication devices may be launched in any of the foreground sections. In this case, the processor operates in the multiprogramming mode, solving control problems in any of the foreground sections, without interfering with the solution of problems in other sections.

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Claims (2)

1. Technical description of the device EU-7077, E 13,042.001 TU, 1976. 2. Technical description on the device EC-7927, E 13, 045.001TU, 1978 (prototype).