SU1418789A1 - Information transceiver - Google Patents

Abstract

The invention relates to information transfer systems in automated process control systems of industrial enterprises. The purpose of the invention is to increase the speed of the device. The device contains a call signal generator I, trigger 2, display element 3, block 4 of manual information input, data wires 5 of communication channel 6, address decoder 7, address wires of communication channel 8, And 9-11 elements, And group 12 elements, signal wires 13, inverter 14, trigger 15, display element 16. When receiving a call signal from a device, the central point searches for the source of information by forming the addresses of all connected devices. When these codes coincide with the address of the source of information, the address decoder 7 is enabled and allows the transmission of information to the central point. 1 il. S (l

Description

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The invention relates to information transmission systems in automated process control systems of industrial enterprises.

The purpose of the invention is to increase the speed of the device.

The drawing shows a functional diagram of the device.

The device contains a call signal generator I, trigger 2, display element 3, block 4 of manual information input, data wires 5 of communication channel 6, address decoder 7, address wires of communication channel 8, AND 9-I elements, And group 12 elements, signal wires 13, inverter 14, trigger 15, display element 16.

Through communication channel 6, each device is connected to a central control unit (computer).

The device works as follows.

In the initial state, the elements 9, 10 and 12 are closed, the trigger 2 and 15 are in the initial (off) state, at their outputs there is a high level potential that keeps elements 3 and 16 in the off state, and the input element And 11 calls are open.

To transfer digital information from this device to the central point, the operator dials, for example, with switches, on block 4 of manually entering information, the data and starts the call 1 generator. The signal from the imaging unit 1 passes the element 11 and through one of the wires 5 of the channel 6 enters the central point. At the same time, the signal from the call signal generator 1 arrives at the third input of the element 10. The central point, the received ringing signal, searches for the calling device, arranging the address codes of all devices connected to them via address wires 8. Simultaneously with the address code, the central point sends short interrogation signals via the signal wires 13 to the second inputs of the And 12 element in series. When the code set on the address wires 8 coincides with the address of the calling device, the output of the address decoder 7 will receive a signal that goes to the first inputs of the And 9, 10, 12 elements. At the outputs of the And 12 elements, the signals that connect the corresponding switch groups of the manual information input unit 4 to the information wires 5 of the communication channel 6.

The central point receives the incoming information and, if there is an error, sends a short signal to the input of the element 9 and the signal 9, which is detected by the trigger 15 and displayed by the display element 16.

1418789

The operator checks the typed information, corrects it and makes a call again. With the right set of information, the central point sends a short signal to the second input of the element And 10, which

 memorized by trigger 2 and highlighted by the display element 3. At the same time, this signal switches the trigger 15 to the initial state.

Since during the call the operator presses and

10 holds the button of the driver 1 for the signal to ignite one of the display elements (3 or 16), the signal at the output of the call element 11 will take place until the call is received, i.e. before trigger 2 is turned on and the low level closing potential appears at the first input of the And 11 element.

15

Upon receipt of a response signal on receiving information (element 3 is turned on), operator 0 releases the call signal generator button, the shutdown signal of which, having passed the inverter 14, switches the call trigger 2 to the initial state and thereby dampens the display element 3.

The device is ready to transmit the next information.

Claims (1)

Invention Formula 0 A device for transmitting and receiving information containing a block of manual input of information, first and second triggers, elements AND, a call signal generator, communication channel, characterized in that, in order to improve speed, the first, second and third elements are inserted into it And, the element NOT, the address deflator, the first and second elements of the display, the inverter, the address wires of the communication channel are connected to the inputs of the address decoder, the output of which is connected to the first inputs of the first, second And elements and the And group elements, the last connectors The signals are connected to the second inputs of the first, second AND elements of the group, the output of the first AND element is connected to the input of the first display element, the output of the call signaling device is connected with the first input of the third element I, with the input of the inverter and with the third input of the second voltage And, the output of which is connected to the second input of the first trigger and to the first input of the second trigger, the output of which With the input of the second display element and with the second input of the third element I, the output of which is connected to the data lines of the communication channel, the output of the inverter is connected to the second input of the second flip-flop. five