JPH05308394A - Modem monitor and control unit - Google Patents

Abstract

PURPOSE:To obtain the modem monitor and control unit which can control plural modems from a keyboard with one time operation when the modems are monitored and controlled by one monitor and the keyboard. CONSTITUTION:This monitor and control unit has one monitor 2 which displays the setting states of the modems 1a-1d, alarm information, etc., and one keyboard 3 which sends out setting information for the plural modems. Further, the unit has selecting means 6a and 6b which select only one out of the modems 1a-1d and access the keyboard to receive the setting information from the keyboard and a switching means 5 which performs control so that the setting information from the keyboard 3 is simultaneously inputted to the other modems than the modem, selected by the selecting means 6a and 6b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a modem supervisory control device, and more particularly to parallel control from a keyboard to a multi-channel modem when supervising and controlling a multi-channel modem by one set of monitor screen and keyboard. The present invention relates to a modem supervisory control device that enables it.

[0002]

2. Description of the Related Art As shown in FIG. 3, a conventional modem monitoring and controlling apparatus has ch1 to chn modems 1a to 1 connected to n units.
This is a device for monitoring and controlling d with a set of monitor 2 and keyboard 3. Each of the modems 1a to 1d is equipped with a microprocessor and operates independently. The monitor 2 can display the setting status of the modem (transmission / reception frequency, ON / OFF state of each function, etc.), alarm information, and the like, and the monitor screen can be switched by operating the keyboard 3. To set the modems 1a to 1d, operate the keyboard 3 according to the monitor screen,
This is performed by setting the TROL mode and inputting a key from the keyboard according to the display on the screen. For example, when the modem first starts up, the modem first checks the hardware and waits for key input as shown in the screen of FIG. 4 (a). If a MONITOR of 1 is input here, a MONITOR mode is entered, and if a CONTROL of 2 is entered, a CONTROL mode is entered. FIG. 4B shows a case where the mode is shifted to the MONITOR mode. However, here the display on the monitor 2 and the mode conversion are
CH of the channel number indicated by the channel switch 5
There is only one modem.

Next, the modem monitoring and controlling apparatus is CH1 to CHn.
A selector 6B for selecting one of the modems 1a to 1d,
6A for selecting monitor 2 or keyboard 3, selector 6
It is composed of a channel switch 5 for controlling B. In the conventional operation, the channel switch 5 is switched to monitor and control a large number of modems one by one. The setting / control of the modem is performed by switching the channel switch 5 to the channel number of the channel of the modem, making the monitor 2 and the keyboard 3 accessible, and inputting a desired monitor screen from the keyboard 3. Therefore, when inputting the same contents such as initial settings to all modems, the modem can access the monitor screen and the keyboard only one channel at a time, so the channel switch 5 must be switched one channel at a time and the same operation must be repeated several times. .. At this time, when each modem becomes accessible, first a health check such as a bus check and an ID check is performed, and when the check is completed normally, monitoring / control is possible. Considering the time required for this health check and the time required for operation for setting one channel, it took a very long time to set all the modems.

[0004]

As described above, since the conventional modem monitoring and control device performs one channel at a time, when setting the same for all modems, the same operation can be performed while switching the channel switch one channel at a time. There is a drawback that it has to be repeated and the setting is troublesome.

[0005]

SUMMARY OF THE INVENTION A modem monitoring and controlling apparatus of the present invention comprises one monitor for displaying setting status and alarm information of a plurality of modems, and one monitor for sending setting information to the plurality of modems. In a modem monitoring and control device having a keyboard, selecting means for selecting only one modem from the plurality of modems to access the keyboard and receiving keyboard setting information; and the modem selected by the selecting means. A plurality of modems other than the above, and switching means for performing control to input the setting information of the keyboard at the same time.

[0006]

The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a keyboard 3 to CH1 and CH3 for explaining the present embodiment.
~ State diagrams when the CHn modems are controlled in parallel, and Figs. 5 and 6 are timing charts of respective signals in this embodiment. 1
Modes a to 1d are installed in the apparatus, and operate independently. A monitor 2 displays the status of the modem, commands input from the keyboard, and the like. Reference numeral 3 denotes a keyboard, which includes ten keys such as a ten-key and a cursor key. Reference numeral 5 denotes a channel switch, which is a rotary switch that switches between 0, 1, 2, ... N, and the switch number indicates the CH number of the modem currently using the monitor screen. Each modem monitors the number of channels indicated by the channel switch through the bus line at regular intervals. A selector circuit 6a selects one channel of the bus line of the modem and switches it according to an instruction from the modem. A selector circuit 6b also selects and switches the bus lines of the monitor 2 and the keyboard 3. Also, the modem connected to the monitor or keyboard by these selector circuits performs data writing for screen display on the monitor 2 and data writing on the keyboard 3 through the bus line at a constant cycle. Ask if is pressed. In addition, reading data from the keyboard 3, that is,
Repeatedly responding from the keyboard. The selector circuit 6b selects and switches a bus line of either a monitor or a keyboard according to an instruction from the modem which has passed through the selector circuit 6a. Reference numerals 7a to 7d are delay circuits that adjust the read timing in order to read the data on the bus accurately. Buffers 8a to 8d are controlled by each modem.

Next, the parallel control operation from the keyboard 3 to the modem, which is a feature of this embodiment, will be described.

Now, when the channel switch 5 is switched to "0", the modem (CH2 modem in FIG. 5) which has the latest channel number "0" as shown in FIG. 5 becomes the representative modem (S modem). , Can be accessed with the monitor.
On the monitor 2, the information of the CH2 modem 1b of this S modem is displayed. FIG. 2 shows a state in which the S-modem writes on the keyboard 3 as a representative and the other modems 1a, 1c to 1d receive the data of the keyboard 3 in parallel according to the write information. The setting of each modem is performed by the keyboard, but the S modem 1b writes the data to the keyboard 3, and the response data is transmitted through the delay circuits 7a to 7d and BUF8a to 8d connected in parallel to all the modems 1a to 1d can receive. However, the data is stored in the selector circuit 6 in the S modem 1b.
It is sent through a and 6b. Each modem has BUF8
It is performed by turning on and off a to 8d. By reading the data in parallel in this way, all the modems other than the S-modem operating independently can read the same data as the S-modem, and the same operation as the S-modem comes to be performed. At this time, all the modems repeatedly write data to the monitor 2, write data to the keyboard, and read data from the keyboard at regular intervals. However, except for the S modem, the selectors 6a and 6b separate the monitor and the keyboard from each other. ,
The data to the keyboard will be discarded. Also, since the modems operate independently, the timing of reading and writing data is different, and if you connect all the modems at the same time, the timing of reading and writing will collide and accurate reading and writing of data will be possible. Disappear. For example, when the timing of writing data to the keyboard by the modem of CH1 and the timing of reading data of the keyboard by the modem of CH2 overlap, signals collide on the bus line and accurate reading / writing of data can be performed. become unable. Therefore, the S-modem writes data on behalf of it. Also, all modems must read the same data from the keyboard, so each modem in turn writes and writes data to the keyboard.
When reading, different data may be read depending on the timing of pressing the key. To this end, only the representative modem needs to write data to the keyboard.

Next, the process in which the modem (CH2 modem in FIG. 2) that takes the initiative when the channel switch specifies "0", that is, the parallel control of the modem, will be described. Modem 1 reads the channel number from CH "" S
When EL9 is "LOW" and the channel switch 5 reaches the protection time "0" of about 1 second, the modem 1 judges that access may be made and tries to start the access. This access start is CH1 SET10-CHn SET1.
With a 0 signal, the modem will take some time. ADR
BUS11 indicates how many channels of the address bus are currently selected. CH "" BSEL12 is obtained by converting it into the TTL level for each channel. C
When H "" BSEL12 is at the "LOW" level, the route of modem 1B in FIG. 2 is selected and CH "" BSE12 is set to "H".
At the "IGH" level, the parallel route of the modems 1a, 1c, 1d is selected. That is, in the case of FIG. 4, the modem 1b of the second channel accesses the monitor screen 2.
If the modems of a plurality of channels simultaneously determine the channel number "0" latest, the modem having the larger channel number is selected.

When the channel switch 5 is "0", all the modems 1 can access the keyboard 3, but each modem 1 is equipped with a CPU.
It operates independently, and the timing of reading varies. Therefore, in order for a plurality of modems to accurately read the input data from one keyboard 3 at the same time, the following measures are taken. FIG. 6 shows a case where the second channel modem 1b accesses the monitor screen 2 as shown in FIG. K ""
The RD 13 is a chip select when each modem goes to read the keyboard 3, and reads data when it is "LOW". KBUS14 shows the data of the bus of the route 21 in FIG. 2, and K "" BUS15 shows the data of the bus of the route 22 in FIG. Now, assuming that K1RD13 is delayed from K2RD13 by a time "T", K1BU is delayed by the delay circuit.
S15 is delayed from KBUS14 by a time "T". By delaying the data on the bus with this delay circuit,
The timing at which the data on the bus is switched and the timing at which the modem reads data from the keyboard 3 do not overlap, so that accurate data can be read.

As described above, when the channel switch 5 is set to "0", the setting of one modem, that is, the S modem, is performed, and all the other connected modems perform the same setting under the control of the keyboard 3 at the same time. Be seen.

[0012]

As described above, according to the present invention, the keyboard and the plurality of modems are connected to the keyboard by including the channel switch for controlling the parallel connection, and the delay circuit and the buffer for the parallel connection described above. All modems can be set to the same setting with one operation. Therefore, unlike the conventional example, there is no need to repeat the same operation for each individual modem, and the operation time can be shortened.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a connection state diagram for explaining the present embodiment.

FIG. 3 is a block diagram of a conventional modem monitoring control device.

FIG. 4 is an explanatory view of a display common to this embodiment and a conventional example.

FIG. 5 is a timing chart illustrating an example of the present invention.

FIG. 6 is a timing chart illustrating an example of the present invention.

[Explanation of symbols]

 1a to 1d CH1 to CHn modem 2 monitor 3 keyboard 5 channel switch 6a, 6b selector circuit (SELECTOR) 7a to 7d delay circuit 8a to 8d buffer circuit

Claims (2)

[Claims] 1. A modem monitoring and control apparatus comprising: a monitor for displaying setting statuses and alarm information of a plurality of modems; a monitor for sending setting information for the plurality of modems; and a keyboard. From the modem 1
Selecting means for selecting only one modem to access the keyboard and receiving keyboard setting information;
A modem monitoring and control device comprising: a switching unit that controls a plurality of modems other than the modem selected by the selecting unit to simultaneously input the setting information of the keyboard. 2. The switching means comprises a delay circuit and a buffer circuit for adjusting the timing of the setting signal of the keyboard for each route in which a plurality of modems and the keyboard are connected in parallel. The modem supervisory control device according to claim 1.