JPS59173812A - Control system for turning on remote power supply - Google Patents

Abstract

PURPOSE:To omit an exclusive line for controlling turning-on of a power supply by forming a power supply turning-on controlling part always supplied from a sub-power source in parallel with a work station control part. CONSTITUTION:A CPU5 constituted by a work station (WS) control part 1, a power supply turning-on controlling part 2, a main power supply 3, and a sub- power supply 4 forms a remote power supply turning-on control system for controlling the turning-on of the main power supply 3 to plural WSs 10-21. The power supply turning-on controlling part 2 is connected to WS interface lines 18, 28 in parallel with the WS control part 1 and the sub-power supply 4 supplies electric power to said control part 2 even if the main power supply 3 does not supply electric power to the central part of the CPU5. The control part 2 executes specified WS polling, and if the polling is valid, power supply turning-on signal 8 is outputted to the main power supply 3. Thus, the main power supply 3 supplies power to said central part and then the WS control part 1 controls the WS10-21.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote power-on control system, particularly for an isolated workstation (hereinafter abbreviated as W8).
The main power supply of the central processing unit, which has control functions for
This invention relates to a remote power-on control system for turning on the power from a computer.

Due to the remarkable progress in distributed information processing technology and integrated circuit technology in recent years, central processing units with support functions for WS have come into widespread use as a means of responding to the shift toward end-user information processing operations. became. End users can operate the WS deployed in their own offices, use the central processing unit installed in isolation, and perform timely information processing that is truly suited to their own work. can.

The central processing unit and multiple WSs or each other are isolated (generally within 1 to 2 km), for example, in different buildings on the same site, on different floors of the same building, or in different workplaces on the same floor. They are installed in separate locations, and each is connected to a WS interface line. In order to use the central processing unit via each WS, it is necessary to turn on the main power of the central processing unit to operate the central processing unit, but it is convenient if the main power can be turned on from the WS.

This type of conventional remote power-on control system includes a WS control unit that directly controls the WS via a polling method via a WS interface line to the central processing unit, and a main power supply that supplies power to the entire central processing unit. In addition, each WS
is provided with a switch for turning on the main power, and a power-on control line connecting each switch and the main power, and in each WS, the main power is turned on by turning on the switch. has been realized.

In such a conventional configuration, the central processing unit and each WS
will be connected over a long distance by the WS interface line and the power-on control line, but since the WS interface line performs pit serial data transfer,
Originally, it was just a twisted pair wire or a single-core coaxial cable, so the connection hardware (wires, connectors, drivers, receivers, switch spaces, etc.) between the central processing unit and each WS was connected to a remote power source. There is a drawback that the amount is doubled compared to the case where input control is not performed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a remote power-on control system that only requires a small amount of hardware in the central processing unit, and the connection hardware can be the same as in the case where remote power-on control is not performed.

In the system of the present invention, a central processing unit having a control function for a separately installed WS is connected to a central processing unit that directly controls the WS using a polling method via a WS interface line.
a main power supply for supplying power to the central part of the central processing unit including the WS control unit; a sub power supply; connected in parallel to the WS control unit to the WS interface line and constantly connected to the sub power supply; and a power-on control unit that polls the WS when the main power supply is turned off, and when the WS is powered on when the main power supply is turned off, the WS responds to the polling and polls the WS when the main power supply is turned off. The present invention is characterized in that upon receiving the response, the control section starts the main power supply turn-on control procedure.The present invention will now be described in detail with reference to one aspect.

In FIG. 1 showing one embodiment of the present invention, this embodiment is W
It includes an S control unit 1, a power-on control unit 2, a main power supply 3, and a sub-power supply 4, and includes 16 WSlo, 11, 12, 1
3.14,15,16,17,20,21゜22.23
, 24, 25.26, and 27, the main power supply 3 of the central processing unit 5 is connected to each WS10 to 17.2.
This is a remote power-on control system for controlling power-on from 0 to 27.

The WS control unit 1 and WSIO~17 are connected to the WS interface line 18, the WS control unit 1 and W820~27 are connected to the WS interface line 28, and the power-on control unit 2 is connected to the interface line 18. 28 is connected in parallel with the WS control section.

FIG. 2 shows a well-known detailed diagram of the W810-17 and 20-27, including the internal bus 30, memory 31, microprocessor 32, power supply 33, host interface circuit 34, and floppy disk controller. 35, a keyboard controller 36, a display controller 37, and a floppy disk drive 45
1, a keyboard 46, and a display 47.

FIG. 3 shows the host interface circuit 34 shown in FIG.
It shows a detailed diagram of the serial/parallel conversion between the bit serial data on the WS interface lines 18 and 28 and the pit parallel data on the internal bus 30, and the generation and generation of check pits.
It includes a host interface dialog control circuit 50 that performs granting and error checking, and an internal bus interface circuit 51 that establishes the right to use the internal bus 30 and controls the progress of the bus operation sequence.

Figure 4 shows twisted bare wire WS interface line 1.
8, and a work stage controller 15 coupled thereto.
．． The power-on control unit 2) or the driver D and receiver box of the WSs 10 to 17 are shown together with the terminating resistor RT.

The WS interface line 28 side also has the same configuration as in this figure.

Next, the operation of this embodiment will be explained based on FIGS. 5 and 6 showing the operation flows of the power-on control section 2 and the microprocessor 32, respectively.

Even when the main power supply 3 is not supplying power to the central part (not shown) of the central processing unit 5 including the WS control unit 1, the sub power supply 4 is supplying power to the power-on control unit 2. In this state, the power-on control unit 2 initializes the WS number in step l) and updates the W8 number in step 4), while polling the WS specified by the WS number in Table 9.
(Step 2), this polling will change the WS number to W
The signal is sent to the S interface lines 18 and 28,
In any WS, the WS number will not be loaded unless the power supply 33 is turned on, so the initial program load (IPL) bit of the status register provided for each WS is not set. is determined (step 3), and the polling is unsuccessful/idling. Now, when the WS operator turns on the power supply 33 in an attempt to operate the WS to process information, the power supply 33 turns on. A power-on reset signal 38 is output to the microprocessor 32, and in response to the power-on reset signal, the microprocessor 32 begins the non-disruptive operation shown in FIG. 1. Initial reset (step 21)
) and initialization (step 22), and set the IPL bit of the status register (step 23).
It is waiting for the power-on control unit 2 to catch up (step 24).

That is, the WS numbers on the WS interface lines 18 and 28 are input to the receiver R, and are sent to the internal bus interface circuit 51 via the host interface dialog control circuit 50.
The current WS number is compared to see if it matches the own WS number. If they do not match, the internal bus interface circuit 51 continues the comparison with the next WS number updated in the power-on control unit 2, and if they match, the microcomputer 32 transfers the contents of the status register to the internal bus 30. Host interface circuit 34 and WS
The data is sent to the power-on control section 2 via the interface line 18 or 28 (step 25), and the microcomputer 32 becomes idle (step 26).

The power-on control unit 2 checks whether the IPL bit of the sent status register is set (step 3), and if it is found to be set, sends the password transfer control firmware to the relevant WS (step 5). , waits for a data transfer request from the WS and enters a polling state (step 6).

The WS is brought out of the idle state (step 26) by the sent password transfer control firmware. Operation analysis in microcomputer 32 (step 27
) Result 7 Completed - It is determined that the Murania load operation is performed (Step 28), so the 1-password transfer control firmware is imported and loaded into the memory 31 (Step 29).
The IPL pit is reset (step 30) and the process returns to the idle state (step 26).

The password transfer control firmware operates as follows. First, the WS operator inputs a password from the keyboard 46 in accordance with the guidance on the display 47 (step 31). When the carriage return key is pressed at this time, the result of the operation analysis (step 27) is determined to be a password transmission (step 32), and the microcomputer 32 sets the send data (SD) bit in the status register. (Step 33), and waits for the power-on control unit 2 to catch up (Step 34).

Similarly to step 24, when the relevant WS catches up, the contents of the status register are transferred to the power-on control unit 2.
(Step 35), resets the 8D bit (Step 36) and returns to idle state (Step 26).
).

When the power-on control unit 2 detects that the SD bit of the status register is set (step 7), it retrieves the password keyed in in step 31 above from the WS (step 8) and confirms that the password is valid. It is checked whether the password is valid or not (step 9), and if it is valid, a power-on signal 8 is output to the main power supply 3. In response to this power-on signal 8, the main power supply starts supplying power to the central part of the central processing unit 5 including the WS control unit 1 via the power supply line 6, and when this power supply ends, the WS The control unit 1 replaces the power-on control unit 2 with W810-17 and 20-2.
7 control will be performed.

Therefore, the power-on control unit 2 only needs to have the minimum functions necessary to turn on the main power 3 from any of the WSs 10 to 17 and 20 to 27, and the central processing unit for other programs and data. 5 and ws io~1
7 and 20 to 27 is not necessary.◇ If it is determined that the password is invalid as a result of the password check in step 9, the power-on control unit 2 sends a password sending message. The user of the central processing unit can be specified because only the operator who is present again can turn on the main power from the WS while sending the data to the WS (step 4) and polling (step 6) again. It is.

According to the present invention, by employing the above configuration, the WS
Since the interface line is also used for power-on control, there is no need for a dedicated power-on control line, and the amount of hardware required for remote power-on control can be reduced.

[Brief explanation of the drawing]

FIG. 1 is an embodiment of the present invention, FIGS. 2, 3, and 4 are detailed views of the embodiment, and FIGS. 5 and 6 are diagrams for explaining the operation of the embodiment. Figures are shown respectively.

Claims (2)

[Claims] (1) A central processing unit having a control function for separately installed workstations includes a workstation control unit that directly controls the workstations by a polling method via a workstation interface line, and the workstation control unit. a main power supply and a sub-power supply for supplying power to the central part of the central processing unit including the workstation interface line and the workstation control unit, and the workstation interface line is connected in parallel with the workstation control unit and is constantly supplied with power from the sub-power supply so that the main power supply is connected to the main power supply. and a power-on control unit that polls the workstation when the main power is off, and when the workstation is powered on during the main power-off state, the workstation responds to the polling and the power-on control unit polls the workstation. A remote power-on control system that starts the main power-on control procedure upon receiving a response. (2) In the power-on control procedure, the power-on control section loads the password transfer control firmware into the workstation, the operator of the workstation inputs a password and transfers it to the power-on control section, and the The remote power-on control system according to claim (1), wherein the power-on control unit checks the password and outputs a signal for turning on the main power if it is valid. .