JPH0474090A - Control operation system for input output device - Google Patents

Abstract

PURPOSE:To control and operate the input and output device optimizingly immediately by collecting installation information from the input and output device and allowing a central controller to reference the information so as to control and operate the input and output device. CONSTITUTION:A highway controller 6 collects and receives periodically installation information from each of the input and output devices at all times and the information is stored in an installation information memory 3. A CPU 1 immediately recognizes the installation state as to each of the devices 4 by referencing the installation information in the memory 3. Each of the devices 4 is controlled via a control bus 2 based on the recognition to attain optimum control and operation of the system.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a system for optimally controlling and operating various input/output devices, such as various input/output devices constituting a storage program control type electronic exchange. It relates to input/output device control and operation methods for optimally controlling and operating devices.

[Prior Art] Until now, as described in Japanese Unexamined Patent Publication No. 1-248788, the existence status of various input/output devices has been investigated by a CPU as a central control unit only immediately after the start of operation of the device. As a result, equipment information is automatically generated.

To specifically explain the above situation with reference to Figure 6, CP
If the UI activates a plurality of input/output devices 4 via the control bus 2 and reads their changing states, the existence of these input/output devices 4 can be confirmed. The presence information acquired in this way is stored in the equipment information memory 3 as equipment information.

[Problems to be Solved by the Invention] However, until now, equipment information has been acquired only when the input/output device is activated, and after that, input/output is performed by referring to the equipment information stored in the equipment information memory. Due to the way the equipment was being controlled and operated, various problems began to occur.

That is, even if a failure suddenly occurs in one of the input/output devices, the CPU cannot immediately recognize this fact, and therefore cannot stop controlling that input/output device.

Also, even if new input/output devices are added during operation, C
Since the PU cannot immediately recognize this fact, the input/output device cannot be used effectively unless the equipment information is updated immediately thereafter.

Furthermore, if some input/output devices are removed for maintenance or other reasons during operation and placed in a non-operating state, it is necessary to perform blockage processing such as deleting or canceling the equipment information for that input/output device in advance. It has become a nuisance.

Basically, the purpose of the present invention is to enable input/output devices to be instantly and optimally controlled and operated by the CPU even while the CPU is controlling and operating multiple input/output devices. To provide an output device control operation method.

Another object of the present invention is to maintain optimal load distribution when there is a change in equipment information regarding the input/output devices while the CPU is controlling and operating a plurality of input/output devices. The purpose of the present invention is to provide an input/output device control and operation method that can control and operate various input/output devices.

Furthermore, another object of the present invention is to check the functions of each input/output device, and when the equipment information is periodically self-reported from the input/output devices, the equipment information is The purpose of the present invention is to provide an input/output device control operation method in which information can be easily collected.

Furthermore, another object of the present invention is to provide an input/output device control and operation method that can limit the number of input/output devices actually controlled and operated by a central control device within the range of the number of operable input/output devices. It is to provide.

[Means for Solving the Problems] The above purpose is to collect equipment information that is periodically self-reported from input/output devices independently of control by a central controller, and to store it as updatable. The central control device periodically refers to the above-mentioned stored equipment information, and then immediately adjusts the input/output devices based on the reference results.
This is achieved through optimal control and operation.

Another purpose is that when the central control unit recognizes some change in the equipment information from the input/output devices as a result of referencing the equipment information from the input/output devices, the same input/output This is achieved by performing optimal load distribution control on the processing type for each human output device of the same human output type that is in a normal operating state.

Still another object is to periodically transfer a frame consisting of a plurality of empty time slots to input/output devices in sequence, and to transfer a frame consisting of a plurality of empty time slots to input/output devices for the first empty time slot that appears. This is achieved through spontaneous insertion of equipment information.

In this case, spontaneous insertion is performed by constantly monitoring the time slots that are sequentially transferred from the previous input/output device using the input/output device name, and inserting the time slot placed at the beginning of the time slot. Only when it is determined that the time slot is an empty time slot based on the information/non-display data, the insertion information/non-display data is set to insert information, and the equipment information for that time slot is not inserted. Achieved by doing.

Furthermore, another object is to provide, under the control of a central controller,
This is achieved by arbitrarily setting the number of time slots that make up a frame within the range of the number of operable input/output devices.

[The central control unit can identify the names of input/output devices in operation by referring to the equipment information periodically self-reported by the input/output devices, which is collected independently of the control by the central control unit. This makes it possible to immediately and optimally control and operate various systems.

In particular, as a result of referencing equipment information from input/output devices,
When the central control unit recognizes a change in equipment information related to the removal, additional accommodation, suspension/resumption of operation, occurrence of a failure, etc. of an input/output device, the change in equipment information regarding the removal, suspension of operation, or occurrence of a failure will occur. control has been suspended,
Optimal load distribution control for the same input/output processing type can be performed for each input/output device of the same input/output type that is in a normal operating state.

By the way, regarding the collection of equipment information from input/output devices, it is desirable that equipment information be periodically self-reported by each input/output device in order to confirm the functions of each input/output device. For this reason, a format has been adopted in which input/output devices voluntarily insert equipment information into frames that are periodically transferred. When a frame consisting of a plurality of empty time slots is periodically transferred to input/output devices in sequence, each output device automatically inserts equipment information into the first empty time slot that appears. All you have to do is do it. In this case, spontaneous insertion is performed by constantly monitoring the time slots that are sequentially transferred from the previous input/output device using the input/output device name, and inserting the time slot placed at the beginning of the time slot. Information/
Only when it is determined from the non-display data that the time slot is an empty time slot, it is necessary to set the insertion information property/non-display data to the insertion information property and insert the equipment information for that time slot. It is. At that time, if the number of time slots that make up a frame is arbitrarily set within the number of operable input/output devices under the control of the central controller, The number of input/output devices that can be used is limited to the number of time slots set.

[Example code] The present invention will be explained below with reference to FIGS. 1 to 5.

First, the system according to the present invention will be described. FIG. 1 shows an example of the system configuration. As shown in the figure, for the CPU as the central control unit (
A terminal 9 (for maintenance) and an equipment information memory 3 are accommodated, and in addition, a plurality of input/output devices (Ilo) 4 are accommodated via the control bus 2, and each of these input/output devices 4 is connected to a CPU It is now operated under the control of the In this case, the equipment information in each of the input/output devices 4 is stored in the equipment information memory 3 under the control of the highway controller 6 so as to be periodically updatable. That is, the highway controller 6 periodically collects and receives equipment information based on the self-report of the input/output device 4 from the inserter 7 corresponding to the input/output device 4 via the highway line 8, and stores it in the equipment information memory 3. This is what has become. At that time, if any of the input/output devices is not accommodated in its accommodation position (in this example, the unaccommodated input/output device is shown as 5), the corresponding inserter 7 is configured such that no information regarding the input/output device is inserted into the highway line 8.

As described above, the highway controller 6 always periodically collects and receives equipment information from each of the input/output devices 4 and stores it in the equipment information memory 3, but the CPU 1 By referring to the equipment information in the memory 3, the equipment status of each input/output device 4 can be instantly recognized. Based on this recognition, each of the input/output devices 4 is controlled via the control bus 2, thereby achieving optimal control and operation of the system. For example, assuming that an input/output device is newly accommodated in an unaccommodated position,
By referring to the equipment information in the equipment information memory 3, the CPU 1 can immediately recognize the fact that the equipment is accommodated. In this case, if the operational load on other input/output devices of the same person's output processing type is excessive,
Load distribution including the newly accommodated input/output device is performed as necessary among the input/output devices. Additionally, if any input/output device is removed, its operation is stopped, or it breaks down, this fact can be immediately recognized by the CPU by referring to the equipment information. and
Necessary measures are now taken based on the recognition results.

Of course, control over these input/output devices is stopped, but if necessary, the load may be changed between input/output devices of the same input/output processing type in a normal state to ensure appropriate load distribution. This means that the redistribution of resources will be carried out.

FIG. 2 also shows a transfer data format of an example of equipment information from each input/output device that is transferred on the highway. As shown in the figure, one high time signal has 256 time slots (OTS~255TS)
Assuming that one input/output device is assigned to one time slot, a maximum of 256 input/output devices can be accommodated for the CPUI.

A time slot consists of 16 bits (bo''b, 5), and information regarding the input/output device assigned to each time slot is expressed in 16 bits. Specifically, each of the 16 bits is used as follows.

b)bo: Used as an ATTENTION bit to indicate whether equipment information has already been inserted on that time slot.

Bits b, ~b7: Used to indicate the input/output processing type of the input/output device assigned to that time slot.

Bits b, ~b1. : Indicates the serial number for the input/output device of the same person output processing type.

Bit b, 4: Indicates whether the input/output device assigned to that time slot is in a blocked state (inoperable state).

Bits b, s: Indicates whether the input/output device assigned to that time slot is in a failure state.

Now, from the highway controller 6, the frame signal (highway signal) shown in FIG. It has become. Each frame signal from the highway controller 6 is sequentially passed through an inserter 7 corresponding to an input/output device, and then sent back to the highway controller 6.
However, in each inserter 7 corresponding to the input/output device, the ATTEN in the empty time slot that appears first
Set the TION bit state to "1", and write the equipment information regarding the input/output device to the remaining bits b2 to bts, and then sequentially transfer it to the insert tough corresponding to the subsequent input/output device. This is what has become. Therefore, each frame signal that circulates periodically includes equipment information about each input/output device, but this periodically obtained equipment information is stored in the equipment information memory 3 as updatable. It is what it is. The equipment information stored in the equipment information memory 3 is referenced periodically or at any time by the central controller 1, but the equipment information is also displayed on the (maintenance) terminal 9 from time to time, so that maintenance Valuable information can be obtained in order to carry out the

Now, to explain the method of inserting equipment information into a frame signal, FIG. 3 shows a schematic internal configuration of the main parts of the input/output device 4 and the inserter 7 provided correspondingly. It is something. As shown in the figure, a selector 12 is provided inside each inserter 7, and this selector 12 is controlled by a selection signal 13 from an inserter control circuit 10 in the input/output device 4. The frame signal from
The equipment information 11 from 0 is inserted into an empty time slot in the frame signal from the preceding inserter 7, and then selectively output to the subsequent inserter. That is, when the input/output device 4 is accommodated, the inserter control circuit 10 constantly monitors the frame signal from the preceding inserter 7 to detect the empty time slot that appears first in each frame period. It has become so. If it is detected in the monitoring state, the inserter control circuit 10 outputs equipment information 11 only during that time slot section, but this is inserted into the frame signal and sent to the subsequent device via the inserter 7. It is designed to be transferred to the side inserter tough.

- Input/output device 4 that inserted equipment information into the frame signal
From then on, equipment information is not inserted again into that frame signal, and similar equipment information is inserted after waiting for the next frame signal.

On the other hand, when the input/output device 4 is not accommodated, the selection signal 13 to the selector 12 is in a floating state,
As a result, the selector 12 is always connected to the front inserter 7.
It is set to selectively output frame signals from. As a result of the above, equipment information is inserted into the frame signal in order from the lowest numbered time slot.

Before explaining the inserter control circuit in detail, the signal waveform of the frame signal serially transferred on the highway line 8 will be explained, for example, as shown in FIG. As shown,
Although the bit state "1" is always set to the midpoint level, when the bit state is "0", it is considered to be a bipolar (ternary) AMI signal in which +0 and 10 levels occur alternately. A violation for frame synchronization is added to this. Therefore, when a violation is detected while monitoring a frame signal, an inserter control circuit for an input/output device can recognize that point as an interframe separation position or a frame start position. .

Now, to explain the inserter control circuit in detail, FIG. 4 shows the configuration of an example thereof. In this case, the PLL section 19 in the inserter control circuit 10
In this case, from the frame signal on the highway line 8, a reception timing clock signal in which the bit period on the frame signal is one tarok period is extracted, while the violation detection unit 21 detects the frame start position. It has become. This timing clock signal is sent to the counter section 2, which is reset once a violation is detected.
By counting with 0, it becomes possible to automatically generate the time slot internal bit address and the time slot address. Now, in the attention controller section 22, the bit address in the time slot is 0"
, that is, the first bit in the time slot (ATTENTI
The state of the frame signal at the position (ON bit) is monitored, and if the time slot is vacant during this monitoring, the selection is made in order to insert the equipment information from the shift register unit 18 into the time slot. signal 13
The selector 12 is placed in a state where the equipment information 11 is selectively outputted. As shown in the figure, the shift register section 18 has a 16-bit capacity parallel register.
It is configured as an in-serial out format, and equipment information is set in parallel to this, but when an empty time slot is detected, it is output to the selector 12 as equipment information 11 in synchronization with the received timing clock signal. This is what is meant to be done.

By the way, the data types that make up the equipment information have already been explained, but among them, ATTEN
The TION bit is always set to "1". Regarding the input/output processing type, the input/output processing type from the setting register 14 is set as is, but the serial number for the input/output device of the same person output processing type is created by the dropper unit 16 and the incrementer unit 17. In addition, it is set in the shift register section 18. The dropper unit 16 can know the input/output processing type for the input/output device 4 from the setting register 14, but by monitoring the frame signal,
It is possible to know which input/output devices of the same person's output processing type exist on the preceding side by storing their oldest numbers. Therefore, if this number is updated by +1 in the incrementer section 17, a serial number for the input/output device of the same person output processing type can be automatically obtained. Furthermore, the input/output device 4 is in a blocked state (operation stopped state).
Whether it is in the operating state or not can be obtained from the operation/blocking information from the blocking switch 15 which determines the operating state or non-operating state. Furthermore, whether or not the input/output device assigned to that time slot is in a failure state can be obtained from failure information indicating the presence or absence of some kind of failure. Although the inserter control circuit is provided inside the input/output device in this example, it may be provided inside the inserter.

Finally, the number of input/output devices 4 that can be controlled and operated by the central controller 1 is determined by the number of input/output devices 4 that can be controlled and operated by the central controller 1. This is possible by appropriately limiting the number of time slots included in the input/output device 4 according to the load condition within the maximum allowable number of input/output devices 4. Even if the downstream input/output device is in a state where it can be controlled and operated by the central control unit, if equipment information from the preceding input/output device has already been inserted into all time slots in the frame signal, This is because although the downstream input/output device is prepared to insert equipment information into the frame signal, it cannot be inserted because there are no empty time slots. Therefore, the central control device 1 ignores the presence of the input/output devices downstream from it, and as a result, cannot be controlled or operated.

[Effects of the Invention] As explained above, in the case according to claim 1, even when a CPU as a central control unit controls and operates a plurality of input/output devices, the CPU controls the input/output devices. It will be possible to immediately and optimally control and operate people. In the case according to claim 2, if there is any change in equipment information regarding the input/output devices while the CPU is controlling and operating a plurality of input/output devices, the input/output is performed in an optimal load distribution state. It will be possible to control and operate the devices. Furthermore, claim 3
, 4, when equipment information is periodically self-reported by input/output devices, it is easy to check the functions of each input/output device. Furthermore, according to claim 5, the number of input/output devices that can actually be controlled and operated by the CPU can be limited at any time within the range of the number of operable input/output devices. .

[Brief explanation of drawings]

FIG. 1 is a diagram showing the system configuration of an example of the system according to the present invention, and FIG. 2 is a diagram showing the transfer data format of an example of equipment information from various input/output devices transferred on the highway line. 3 is a diagram showing a schematic internal configuration of the main parts of an input/output device and an inserter provided corresponding to the input/output device, and FIG. 4 is a diagram showing the configuration of an example of an inserter control circuit. FIG. 5 is a diagram showing the signal waveform of a frame signal serially transferred on a highway line, and FIG. 6 is a diagram for explaining a method of collecting equipment information according to the prior art. 1...CPU (central control unit), 2...control bus,
3... Equipment information memory, 4... Input/output device, 6...
・Highway controller, 7... inserter, death ・
・Highway Line No. 1 1-・CLIP (Central!'l tp outfit, f) 2-Rimisaki Bajin 3...Setbutsu Kashiro 1. E I I 4-...Input force device No. 4 1st j 6-・L road 2 4/troller 7・-/i ・'circ 8- ・ノXIu j: 1# back and figure +O++ -o+o+-o++o+ + +-0
++O+1+01-01 1 +Q 1 -0

Claims (1)

[Claims] 1. An input/output device control operation method in a storage program control system configured to include a central control device and a plurality of input/output devices controlled by the control device, which Independently from control by the device, equipment information that is periodically self-reported from each input/output device is collected and stored as updatable, while the central control unit periodically updates the stored equipment information. An input/output device control and operation method characterized in that each input/output device is immediately and optimally controlled and operated based on the reference results. 2. As a result of referencing equipment information from each input/output device,
If there is any change in equipment information, the central control unit will perform optimal load distribution control for the same input/output processing type based on the recognition of the change. 2. The input/output device control operation method according to claim 1, wherein the input/output device control operation method is performed for each input/output device. 3. When a frame consisting of a plurality of empty time slots is periodically transferred to each input/output device, each input/output device spontaneously inserts equipment information into the first empty time slot that appears. 3. The input/output device control operation method according to claim 1, wherein: 4. Each input/output device constantly monitors the time slots that are sequentially transferred from the previous input/output device, and determines whether the time slot is empty based on the insertion information presence/absence display data placed at the beginning of the time slot. 4. The input/output device control operation method according to claim 3, wherein only when it is determined that the insertion information presence/absence is present, the insertion information presence/absence display data is set to insertion information presence and the equipment information for the time slot is inserted. 5. Claim 3, wherein the number of time slots constituting a frame is arbitrarily set at any time under the control of the central controller.
, 4. The input/output device control operation method according to any one of .