JP2003263226A - Inching operation control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of the inability for a conventional system to control inching control objects across different models and different manufacturer's inching operation control systems, even though it is installed in the same power plant, public system and factory. <P>SOLUTION: An inching operation control system connects a plurality of inching operation control systems A and B with different communication protocols via a communication line, provides protocol translation function parts respectively with the each control system A and B the different protocols, and performs inching control, even of the inching control objects across the control systems A and B with the different protocols by inching operations through the function parts. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inching operation control system composed of a plurality of inching operation control system systems having different communication protocols.

[0002]

2. Description of the Related Art For example, in a conventional inching operation control system disclosed in Japanese Unexamined Patent Publication No. 2000-201330 (publication date: January 21, 2000), an inching operation control system is used for a plurality of inching operations having different communication protocols. In the case of configuring with a control system system, for example, one inching operation control system system and another inching operation control system system are different models of operating end devices that drive the inching control target. If the maker of the operating end device is a different maker, or if the basic protocol of the communication line is used as the maker's own protocol, the control device and operating end device will be different for each system. It was necessary to take a complete independent system configuration. In this way, in the case of a complete independent system configuration for each system system, the communication line and basic protocol of the inching operation control system system configured within the same technological culture of the same model and the same manufacturer At the time of switching, there is an advantage that updating can be performed relatively simply when the entire system in the system is to be updated.

[0003]

However, in large-scale facilities such as power plants, public systems, and factories, inching control targets such as a fuel supply valve, an air amount control valve, a steam amount control valve, and a water amount control valve are required. There are many gates, blowers for power supply, pumps, etc., and more than one manufacturer receives orders. For example, No. 1 and No. 2 are company A, No. 3, No. 4 and company B are unique. Since the inching operation control system system is constructed using the technology and the original communication protocol, the inching operation control system of different models / different makers can be used in the conventional system even in the same power plant, public system, or factory. The inching control target cannot be controlled across the system, and when the communication line becomes obsolete and it is switched to another communication line or basic protocol in the future, it is necessary to review the entire system. Or, the other eye - there is a problem that or become a barrier of orders to mosquitoes. In addition, while there is a general tendency of a wide range of supervisory control via the internet these days, in the inching operation control system,
There is also a problem that the conventional system as described above cannot follow the general tendency of wide-range monitoring and control via the Internet.

The present invention has been made in view of these points, and even if an inching operation control system is constituted by a plurality of inching operation control system systems having different communication protocols, a plurality of inching operation control systems having different communication protocols are formed. It is intended to enable inching operation control of an inching control target across systems.

[0005]

According to another aspect of the present invention, there is provided an inching operation control system comprising a plurality of inching operation control system systems having different communication protocols, wherein each inching operation control system system controller performs inching operation. In an inching operation control system for performing inching control on a corresponding inching control target based on a plurality of inching operation control system systems having different communication protocols while connecting a plurality of inching operation control system systems having different communication protocols with a communication line. A protocol conversion function unit is provided for each, and the inching control target of the inching operation control system system having different communication protocols is inching-controlled by the inching operation via the protocol conversion function unit.

An inching operation control system according to a second aspect of the present invention is the inching operation control system according to the first aspect, wherein the inching control target to be controlled based on the inching operation by the control device is the control. The device selects based on the inching operation over a plurality of inching operation control system systems.

An inching operation control system according to a third aspect of the present invention is the inching operation control system according to any one of the first and second aspects, wherein at least one control device and an inching control target are provided. In addition to interposing a wide area network on a part of the communication line, the inching rate is changed according to the load condition of the communication line.

An inching operation control system according to a fourth aspect of the present invention is the inching operation control system according to any one of the first and second aspects, wherein at least one control device and an inching control target are provided. In addition to interposing a wide area network in a part of the communication line, the data error detecting function section is provided.

An inching operation control system according to a fifth aspect of the present invention is the inching operation control system according to any one of the first to fourth aspects, in which a time slot containing an inching operation amount in a control signal is used. In the previous time slot, a discrimination signal indicating whether the inching operation is being performed or the inching operation is not being performed is placed on each inching control target.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of the overall configuration of an inching operation control system according to the first embodiment. In FIG. 1, A is an inching operation control system system manufactured by Company A, which uses a communication protocol unique to Company A. B is an inching operation control system system manufactured by company B, which uses a communication protocol unique to company B that is different from company A. In the following, those belonging to the inching operation control system system A manufactured by Company A will be denoted by reference numerals with A, and those belonging to the inching operation control system system B manufactured by Company B will be denoted by B.
Is attached as a code.

1A1 and 1A2 are both control devices manufactured by Company A. The control device 1A1 includes a control unit 1A11, a display unit 1A12, and a console 1A1.
The control unit 1A2 includes a control unit 1A21 and a display unit 1A2.
2 and the console 1A23, both control devices 1A1 and 1A2 are under the same communication infrastructure protocol. 1B1 is a control device manufactured by Company B, and the control device 1B1 includes a control unit 1B11, a display unit 1B12, and a console 1B13.
It is under a communication infrastructure protocol different from 1A1 and 1A2.

The control unit 1A11 has a protocol conversion function unit 1A115, which will be described later, and processes the overall operation control signal of the inching operation control system to display the display unit 1A12.
Necessary operation, and operation signals to the operation end devices 3A1, 3A2, 3B1, and 3B2, and the detailed internal configuration and functions thereof will be described later with reference to FIGS. 2 and 3. The display unit 1A
12 is an inching operation amount for the inching operation target 3A14, 3A24, 3B14, 3B24 operated by the operator 1A13, or inching operation target 3A14, 3A24, 3B14, 3B24
The state and the like are displayed. The console 1A13 is
The operation signal from the operator is received and transmitted to the control unit 1A11.

The control unit 1A21 has a protocol conversion function unit 1A215, which will be described later, and processes the overall operation control signal of the inching operation control system to display the display unit 1A22.
Necessary display to the operation end device 3A1, 3A2, 3B1, 3B2 to send an operation signal to, etc., its detailed internal configuration and function is the same as or equivalent to the control unit 1A11 detailed description Omit. The display unit 1A22 is the inching operation target 3A14, 3A operated by the operator on the console 1A23.
The amount of inching operation for 24, 3B14, 3B24, the state of the inching operation targets 3A14, 3A24, 3B14, 3B24, etc. are displayed. The console 1A23 receives an operation signal from an operator and transmits it to the controller 1A21.

The control unit 1B11 has a protocol conversion function unit 1B115, which will be described later, and processes the entire operation control signal of the inching operation control system to display the display unit 1B12.
Necessary display to the operation end device 3A1, 3A2, 3B1, 3B2 to send an operation signal to, etc., its detailed internal configuration and function is the same as or equivalent to the control unit 1A11 detailed description Omit. The display unit 1B12 is the inching operation target 3A14, 3A operated by the operator on the console 1B13.
The amount of inching operation for 24, 3B14, 3B24, the state of the inching operation targets 3A14, 3A24, 3B14, 3B24, etc. are displayed. The console 1B13 receives an operation signal from an operator and transmits it to the control unit 1B11.

Reference numeral 2A is a communication line of the inching operation control system system A manufactured by Company A, which is a closed communication line such as LAN. Reference numeral 2B is a communication line of the inching operation control system system B manufactured by Company B, which is a closed communication line such as LAN.

2A1A13A1 is a control unit 1A11 of the control device 1A1
And a communication line connecting the operation end device 3A1 described later via the communication line 2A, 2A1A13A2 is a control unit 1A11 of the control device 1A1
And a communication line connecting the later-described operating end device 3A2 via the communication line 2A, 2B1A13B1 is a control unit 1A11 of the control device 1A1
And a communication line connecting the operation end device 3B1 described later via the communication line 2B, 2B1A13B2 is a control unit 1A11 of the control device 1A1
And a later-described operating end device 3B2 are communication lines that connect via the communication line 2B.

The communication lines 2A1A13A1 and 2A1A13A2 are
The inching operation control system system A manufactured by the company A is under the unique communication infrastructure protocol, and the communication lines 2B1A13B1 and 2B1A13B2 are under the unique communication infrastructure protocol by the inching operation control system system B manufactured by the company B. That is, the communication lines 2A1A13A1 and 2A1A13A2 and the communication lines 2B1A13B1 and 2B1A13B2 are under different communication infrastructure protocols.

2A1A23A1 is a control unit 1A21 of the control device 1A2
And a communication line 2A1A23A2 connecting the above-mentioned operation end device 3A1 with the communication line 2A, and the control unit 1A21 of the control device 1A2.
And a communication line connecting the operating end device 3A2 described later via the communication line 2A, 2B1A23B1 is a control unit 1A21 of the control device 1A2
And a later-described operating end device 3B1 through a communication line connecting the communication line 2B, 2B1A23B2 is a control unit 1A21 of the control device 1A2
And a later-described operating end device 3B2 are communication lines that connect via the communication line 2B.

The communication lines 2A1A23A1 and 2A1A23A2 are
The inching operation control system system A manufactured by the company A is under the unique communication infrastructure protocol, and the communication lines 2B1A23B1 and 2B1A23B2 are under the unique communication infrastructure protocol by the inching operation control system system B manufactured by the company B. That is, the communication lines 2A1A23A1 and 2A1A23A2 and the communication lines 2B1A23B1 and 2B1A23B2 are under different communication infrastructure protocols.

2A1B13A1 is a control unit 1B11 of the control device 1B1
And a communication line connecting the operation end device 3A1 described later via the communication line 2A, 2A1B13A2 is a control unit 1B11 of the control device 1B1
And a control line 1B11B13B1 connecting the control end device 3A2 and a later-described operating end device 3A2 via the communication line 2A, the control unit 1B11 of the control device 1B1.
And a communication line 2B1B13B2 connecting the above-mentioned operation end device 3B1 with the communication end device 3B1 via the communication line 2B, and the control unit 1B11 of the control device 1B1.
And a later-described operating end device 3B2 are communication lines that connect via the communication line 2B.

The communication lines 2A1B13A1 and 2A1B13A2 are
The inching operation control system system A manufactured by the company A is under the unique communication infrastructure protocol, and the communication lines 2B1B13B1 and 2B1B13B2 are under the unique communication infrastructure protocol by the inching operation control system system B manufactured by the company B. That is, the communication lines 2A1B13A1 and 2A1B13A2 and the communication lines 2B1B13B1 and 2B1B13B2 are under different communication infrastructure protocols.

3A1 and 3A2 are operating end devices (product of A company) of the inching operation control system system A manufactured by A company, which correspond to inching operation control signals from the control devices 1A1, 1A2 and 1B1 respectively. Inching control target (the fuel supply valve, air amount control valve, steam amount control valve, water amount control valve / gate)
Drive, a blower for power, a pump, etc.) according to the inching operation control.

3B1 and 3B2 are operating end devices (product of B company) of the inching operation control system system B manufactured by B company, which correspond to inching operation control signals from the control devices 1A1, 1A2, 1B1 respectively. Inching control target (the fuel supply valve, air amount control valve, steam amount control valve, water amount control valve / gate)
Drive, a blower for power, a pump, etc.) according to the inching operation control.

The operating end device 3A1 includes an interface device 3A11, a received signal detector 3A12, a drive signal generator 3A13,
Operating end 3A14, confirmation sensor 3A15, and transmission signal generator 3A
It consists of 16.

The operating end device 3A2 includes an interface device 3A21, a reception signal detecting portion 3A22, a drive signal generating portion 3A23,
Operating end 3A24, confirmation sensor 3A25, and transmission signal generator 3A
It is composed of 26.

The operating end device 3B1 includes an interface device 3B11, a received signal detector 3B12, a drive signal generator 3B13,
Operating end 3B14, confirmation sensor 3B15, and transmission signal generator 3B
It consists of 16.

The operating end device 3B2 includes an interface device 3B21, a received signal detector 3B22, a drive signal generator 3B23,
Operating end 3B24, confirmation sensor 3B25, and transmission signal generator 3B
It is composed of 26.

The received signal detector 3A12 is the control device.
The operation signals from 1A1, 1A2, and 1B1 are detected.
The drive signal generation unit 3A13, the control device 1A1, 1A2, 1B
The inching operation target 3A14 based on the operation signal sent from 1 through the interface device 3A11.
Is for generating a signal for driving. The confirmation sensor 3A15 detects and outputs an operating state, an operation inhibition state, etc. of the inching operation target 3A14. The transmission signal generation unit 3A16 receives the output of the confirmation sensor 3A15 and adds detection information such as an operation state of the inching operation target 3A14 and an operation inhibition state to a signal of a frame structure (shown in FIG. 4) described later. The transmission signal is generated and sent to the control devices 1A1, 1A2, 1B1 via the interface device 3A11.

The received signal detector 3A22 is the control device.
The operation signals from 1A1, 1A2, and 1B1 are detected.
The drive signal generation unit 3A23, the control device 1A1, 1A2, 1B
Based on the operation signal sent from 1 through the interface device 3A21, the inching operation target 3A24
Is for generating a signal for driving. The confirmation sensor 3A25 detects and outputs an operation state, an operation inhibition state, etc. of the inching operation target 3A24. The transmission signal generation unit 3A26 receives the output of the confirmation sensor 3A25 and adds detection information such as an operating state of the inching operation target 3A24 and an operation inhibition state to a signal of a frame structure (shown in FIG. 4) described later. The transmission signal is generated and sent to the control devices 1A1, 1A2, 1B1 via the interface device 3A21.

The received signal detector 3B12 is the control device.
The operation signals from 1A1, 1A2, and 1B1 are detected.
The drive signal generation unit 3B13, the control device 1A1, 1A2, 1B
The inching operation target 3B14 based on the operation signal sent from 1 through the interface device 3B11.
Is for generating a signal for driving. The confirmation sensor 3B15 detects and outputs an operation state, an operation suppression state, etc. of the inching operation target 3B14. The transmission signal generation unit 3B16 receives the output of the confirmation sensor 3B15 and adds detection information such as an operation state and an operation inhibition state of the inching operation target 3B14 to a signal of a frame structure (shown in FIG. 4) described later. It is for generating a transmission signal and transmitting it to the control device 1A1, 1A2, 1B1 via the interface device 3B11.

The received signal detector 3B22 is the control device.
The operation signals from 1A1, 1A2, and 1B1 are detected.
The drive signal generation unit 3B23, the control device 1A1, 1A2, 1B
The inching operation target 3B24 based on the operation signal sent from 1 through the interface device 3B21.
Is for generating a signal for driving. The confirmation sensor 3B25 detects and outputs an operation state, an operation inhibition state, etc. of the inching operation target 3B24. The transmission signal generation unit 3B26 receives the output of the confirmation sensor 3B25 and adds detection information such as an operation state and an operation inhibition state of the inching operation target 3B24 to a signal of a frame structure (illustrated in FIG. 4) described later. It is for generating a transmission signal and transmitting it to the control device 1A1, 1A2, 1B1 via the interface device 3B21.

FIG. 2 shows the internal structure of the control unit 1A11 of the control device 1A1, and FIG. 3 is a diagram for explaining the function thereof. As shown in FIG. 2, the control unit 1A11 is
Display control unit 1A111, calculation control unit 1A112, operation signal generation unit 1A
113, a reception signal detection unit 1A114, a protocol conversion function unit (hereinafter referred to as a protocol conversion / operation end selection unit) 1A115, and an interface unit 1A1116A1, 1A1116A2, 1A1116B1,
It is composed of 1A1116B2.

The display control unit 1A111 includes the display unit 1A12.
Is used to generate a display signal to. The arithmetic control unit 1A
Reference numeral 112 is for performing calculation and control output for inching operation. The operation signal generation unit 1A113 is for generating various operation signals and transmitting the generated operation signals (an example is shown in FIG. 4). The reception signal detection unit 1A114 detects the operation end signals transmitted from the operation end devices 3A1, 3A2, 3B1, 3B2.

The protocol conversion / operation end selection unit 1A115
Determines the communication line 2B and communication base protocol that support different models and different manufacturers, and supports the corresponding communication line 2A1A13A
1, 2A1A13A2, 2B1A13B1, 2A1B13B2 interface units 1A116A1, 1A116A2, 1A116B1, 1A116B2 perform data transmission / reception.

Further, the protocol conversion / operation end selection unit
As shown in FIG. 3, the 1A115 is a transmission / reception function unit 1A1151 for data for its own manufacturer, a conversion function unit 1A1152 for protocol data for its own manufacturer, and a different manufacturer network. A data transmission / reception function unit 1A1153 of the device and a different manufacturer network-a function of determining whether or not the device is connected 1A1154, and a signal transmitted from the transmission signal detection unit 1A113 It is converted to the communication protocol of the inching operation control system system B manufactured by the company and is sent to the interface units 1A116B1 and 1A116B2 corresponding to the operation end devices 3B1 and 3B2 of the inching operation control system system B manufactured by the company B. The signals received from the interface units 1A116B1 and 1A116B2 are converted into the communication protocol of the inching operation control system system A manufactured by A company and sent to the received signal detection unit 1A114.

The interface section 1A116A1 sends the signal sent from the protocol conversion / operation end selecting section 1A115 to the corresponding communication line 2A1A13A1 and receives from the corresponding operation end device 3A1 received via the corresponding communication line 2A1A13A1. Is sent to the protocol changing / operating terminal selecting unit 1A115.

The interface section 1A116A2 sends the signal sent from the protocol conversion / operation end selecting section 1A115 to the corresponding communication line 2A1A13A2, and from the corresponding operation end device 3A2 received via the corresponding communication line 2A1A13A2. Is sent to the protocol changing / operating terminal selecting unit 1A115.

The interface section 1A116B1 sends out the signal sent from the protocol conversion / operation end selecting section 1A115 to the corresponding communication line 2B1A13B1 and from the corresponding operation end device 3B1 received via the corresponding communication line 2B1A13B1. Is sent to the protocol changing / operating terminal selecting unit 1A115.

The interface section 1A116B2 sends the signal sent from the protocol conversion / operation end selecting section 1A115 to the corresponding communication line 2B1A13B2, and from the corresponding operation end device 3B2 received via the corresponding communication line 2B1A13B2. Is sent to the protocol changing / operating terminal selecting unit 1A115.

FIG. 4 is a diagram showing a frame structure of signals transmitted and received between the control units 1A11, 1A21, 1B11 and the operating end devices 3A1, 3A2, 3B1, 3B2, and T1 is a basic protocol type. Judgment time slot, type of communication infrastructure protocol,
For example, TCP / IP, OPC, FDDI, etc. are added. T2 is a time slot for confirming the frame type and data transmission time, which carries the frame type and the data transmission time. The time slots T1 and T2 are commonly called "headers".

T3 is an event presence / absence information time slot. For example, while the inching operation control signal is being output, the number is advanced, and it is determined that the inching operation control is performed by confirming the step of the number. It is used to do.

T4 is a time slot for a manipulated variable signal, and time slots T41A to T44A in this time slot T4 are time slots for designated operation end numbers and operation end device numbers, and an operator at the operation console (for example, 1A13) The specified inching operation target (for example, 3A14) and the corresponding operation end device (for example, 3A1) are added to the specified inching operation target, and the specified inching operation target and the operation end device corresponding to the specified inching operation target are used as a system. Can be confirmed / specified.

Further, the operation amount signal time slot T4
Time slots T41B to T44B are time slots for designated operation terminal data, and the inching operation amount, for example, Pascal,
%, The difference value between the specified opening and the current latitude, etc. are added,
The system allows the amount of inching operation to be confirmed.

T5 is a time slot for operating end information, from the control units 1A11, 1A21, 1B11 to the operating end devices 3A1, 3A2,
In the signal transmitted to 3B1, 3B2, this time slot T5 is empty, in the signal transmitted to the control unit 1A11, 1A21, 1B11 from the operating end device 3A1, 3A2, 3B1, 3B2, the confirmation sensor 3A15, The signals detected by 3A25, 3B15 and 3B25 are added. This will increase the reliability of signal processing,
Data referenceability and analyticity are also improved.

As shown in FIG. 5A, for example, the inching control target 3A14, 3A24, 3B14, 3B24 on the console 1A13.
When all of the 3A14, 3A24, 3B14, 3B24 inching operation in order, the display unit 1A12, inching control target 3A14,
The operation end devices 3A1, 3A2, 3B1, 3B2 of 3A24, 3B14, 3B24 are all displayed in the operation order as illustrated, and similarly, in the operation order, the time slot T41A is loaded with the number of the operation end device 3A1 and the time slot T42A. Is assigned the number of the operating end device 3A2, time slot T43A is assigned the number of the operating end device 3B1, and time slot T44A is assigned the number of the operating end device 3B2. In this way, the signal processing can be performed efficiently and the signal processing speed can be increased.

In this case, the time slots T41B, T42B, T4
3B, T44B, in the same operation order as above, the inching operation amount for the inching control target 3A14 in the time slot T41B, the inching operation amount for the inching control target 3A24 in the time slot T42B, the time slot T4.
3B is the inching operation amount for inching control target 3B14, and inching control target 3B24 is for time slot T44B.
The inching operation amount with respect to each is added. In this way, the signal processing can be performed efficiently and the signal processing speed can be increased.

Further, for example, when only the inching control targets 3B24 and 3A14 are inching operated in the order of 3B24 and 3A14 on the console 1A13, the inching control target 3B24,
The operation end devices 3B2 and 3A1 of 3A14 are displayed in the operation order as shown in FIG. 5B, and in the same operation order, the number of the operation end device 3B2 is displayed in the time slot T41A and the time slot T42.
The number of the operating end device 3A1 is assigned to A, and time slots T41A to T4
It can be placed in order from the front of 4A. In this way, the signal processing can be performed efficiently and the signal processing speed can be increased.

Also in this case, in the same operation sequence as above, the inching operation amount for the inching control target 3B24 is set for the time slot T41B, and the inching operation amount for the inching control target 3A14 is set for the time slot T42B before the time slots T41B to T44B. They are placed one by one in order from the beginning. In this way, the signal processing can be performed efficiently and the signal processing speed can be increased.

In the above, T41 to T44 in the time slot T4.
Up to four slots are provided for the control device 1A
1, 1A2, 1B1 each operator console 1A13, 1A23, 1B13, and each display unit 1A12, 1A22, 1B12 four inching control target 3A14,
This example is based on the assumption that simultaneous operation and simultaneous display can be performed on the 3A24, 3B14, and 3B24. The number of slots changes according to the screen configuration of the display unit and the configuration of the console. It is not limited to one.

Next, the operation will be described. Display control unit 1A
The signals supplied to the protocol conversion / operation end selection unit 1A115 via the 111, the operation control unit 1A112, and the transmission signal generation unit 1A113 are the same as those of the control unit 1A11, 1A12, 1B11 shown in FIG. This is a signal with a frame configuration.

The signal of such a frame is designed to be repeatedly transmitted periodically, and therefore the operating end device 3A
1, 3A2, 3B1 and 3B2 are headers T1 and T2 signals, time slot T3 event presence / absence information, time slots T41A to T44A
The event number signal, the designated operating end (inching control target) number, and the operating end device number are detected, and the inter-device synchronization is maintained and the operation event is detected after always performing an accurate inter-device link. Based on the operation information obtained by detection, when the operation signal is addressed to the own device, for example, the operation end device 3A1, the drive signal generation unit 3A13 generates a drive signal to drive the inching control target 3A14.

Further, confirmation sensors 3A15, 3A25, 3B15, 3B25
The corresponding inching control target 3A14, 3A24, 3B14, 3B24 detects the operating state and operation suppression state, and this information is generated by the corresponding transmission signal generation units 3A16, 3A26, 3B16, 3B26 and placed in the time slot T5 to perform the corresponding operation. End device 3A1, 3A2, 3B1, 3B2
From all the control devices 1A1, 1A2, 1B1,
Each display unit 1A12, 1A22, 1B12 can monitor the state of the inching operation target in real time.

Further, since the signals generated by the transmission signal generator 1A114 of the controllers 1A11, 1A21, 1B11 are placed in the time slots T2 to T4, the controllers 1A11, 1A21, 1B11 which received them. In the protocol conversion / operating end selecting unit 1A115, based on the information of the time slots T41A to T44A, the corresponding operating end devices 3A1, 3A2, 3B1, 3B2 are indexed, and the corresponding interface units 1A116A1, 1A116.
Data is sent to A2, 1A116B1, and 1A116B2. At this time, the inching operation target information via the other line is stored inside the protocol conversion / operating end selection unit 1A115, and when sending to the communication line, the information via the other line is blanked. Replace.

A predetermined protocol number corresponding to the frame data sent to the interface section is set in the time slot T1, and this information and its own interface are set in the interface section. After confirming that the protocol used in the connection line matches, the time slot T1 is deleted and the time slots T2 to T5 are sent to the corresponding communication line.

Further, the frame data transmitted from the operating end devices 3A1, 3A2, 3B1 and 3B2 in which the inching control target information is mounted in the time slot T5 is the interface part 1A116A.
After receiving at 1, 1A116A2, 1A116B1, 1A116B2, time slot T1 is equipped with the corresponding communication line and the number corresponding to the communication infrastructure protocol, and sent to the protocol conversion / operation end selection unit 1A115, and the protocol conversion / operation received Edge selection section 1A11
In 5, the interface parts 1A116A1, 1A116A2, 1A116B1, 1A116 compatible with multiple communication lines and communication infrastructure protocols
By combining the inching control target information with the data received from B2 by superimposing them and sending them to the reception signal detection unit 1A114, the inching target information can be passed to the upper display control unit 1A111 without omission. it can.

The protocol conversion / operation end selection unit 1A11
In 5, for each line, that is, holding the previous reception data for each protocol number, the operating end device 3A1, 3A2, via a plurality of lines,
If all the line data are not available even after waiting for the specified time from the data from 3B1 and 3B2, regarding the data of the line which has not reached the data, the previously received data is set to the corresponding time slot T5. It is mounted on the device and passed to the display control unit 1A111 to absorb the deviation of the response caused by the difference of the line.

Embodiment 2. FIG. 6 is a diagram showing another structure of the signal frame. For example, in the time slot area T31, the presence / absence of an event for the inching control target 3A14, and in the time slot area T32, the presence / absence of an event for the inching control target 3A24, The area T33 is provided with the presence / absence of an event for the inching control target 3B14, and the time slot area T34 is provided with the presence / absence of an event for the inching control target 3B24. For example,
If there is an event, "1" is added, and if not, "0" is added. By doing so, it is possible to determine the number of inching control targets with events in this time slot T3, and the number of time slots T41A to T44A
Since it is not necessary to access the remaining time slots having no event among the time slots T41A to T44A, the processing speed is increased.

Third Embodiment FIG. 7 is a configuration diagram of the control unit 1A11 according to the third embodiment. 2 described above in FIG.
The same reference numerals as those in FIG. 2 indicate the same or corresponding portions as those in FIG. When using a communication line such as a wide area network environment such as the Internet or extranet,
There is a possibility that the round-trip response time of the operating end information to the inching operation command may be significantly reduced due to the line utilization rate and line route by an unspecified number of users of the wide area network.

Therefore, for each communication line and communication base protocol, the time at which the inching operation command data is sent out and the time at which the inching control target information serving as the answer is fed back are defined by the protocol conversion / operation end selection unit. 1A115
However, by notifying the communication status storage / statistics unit 1A117, the communication status storage / statistics unit 1A117 that has received the notification accumulates the round-trip response time of the past one hour or so of the communication line and communication infrastructure protocol, and From the accumulated data,
A timeout time for detecting a communication abnormality as seen in the TCP protocol is dynamically calculated from statistical data.

Further, a coefficient for reducing the inching rate (degree) for the corresponding designated inching control target operation data is automatically calculated according to the delay of the round-trip response time. The calculated timeout time and inching rate coefficient are notified to the protocol conversion / operation end selection unit 1A115, and the protocol conversion / operation end selection unit 1A115 is notified.
Then, the timeout is monitored according to the notified communication timeout time. Therefore, the time-out can be monitored with an appropriate time-out time according to the communication load state at each time, and stable inching operation control can be performed.

Further, with respect to the designated inching control target operation data transmitted from the transmission signal generation unit 1A113, the inching trace notified from the communication state storage / statistical unit 1A117.
Data multiplied by the test coefficient to the lower interface section 1A116A
1, 1A116A2, 1A116B1, 1A116B2. When a time-out is detected, the upper transmission signal generation unit 1A11
3. It is possible to notify the arithmetic and control unit 1A112 and the display control unit 1A111 of a communication abnormality and call for suppression of the inching operation.

Fourth Embodiment Next, a fourth embodiment of the invention will be described. FIG. 8 shows an example of the configuration of the entire system according to the fourth embodiment, and FIG. 9 shows an example of the configuration of the control unit 1A11 according to the fourth embodiment. In FIG. 9, 1B
2R is a control device (product of company B), which includes a control unit 1B2R1 and a display unit 1B2R.
2.Composed of console 1B2R3, communication line 2I for wide area network such as internet, extranet, etc.
This is an example of inching operation and status monitoring of the inching control targets 3A14, 3A24, 3B14, 3B24 from a remote location such as a central monitoring station via 2I2A2B, 2I1B2R.

When performing inching control under a wide area network such as the Internet, in addition to the inching control according to the fluctuation of the round-trip response time due to the above-mentioned line utilization rate and communication load, unauthorized access from outside and information It is necessary to consider falsification and data bit garbled due to deterioration of communication quality.

Therefore, in the security algorithm routine storage unit 1A118 of FIG. 9, password information for avoiding unauthorized access, which is arranged in advance with the operating-end devices 3A1, 3A2, 3B1, and 3B2 for each communication line and communication base protocol, is stored. Stores both the routing processing of multiple types of encryption algorithms used to ensure the detection of information tampering and discards tampered data, and also determines whether data bits have become garbled due to deterioration of communication lines. The routine processing of a plurality of types of data error detection methods to be stored is stored in the security algorithm routine storage unit 1A118 before the protocol conversion / operation end selection unit 1A115 sends the data to the lower order. , The security algorithm routine storage unit 1A which has received the notification by adding the protocol information corresponding to the communication line and the communication base protocol of the time slot T1 of FIG. At 118, the corresponding password is taken out and the algorithm routine is driven to calculate the cipher code for the transmitted frame data and the data error detection code to calculate the protocol conversion / operation end selection unit.
Reply to 1A115.

The protocol conversion / operation end selection unit 1A115 receives these password, encryption code, and data error detection code.
4A and 6B, the security information item is added to the time slot T2 of FIG. 4 and FIG.
1, 1A116A2, 1A116B1, 1A116B2.

The lower interface section 1A116A1, 1
A116A2, 1A116B1, 1A116B2 via the operation end device 3A1, 3A2,
Framed that has been fed back from the 3B1 and 3B2 sides
Security algorithm routine storage
Pass it to 1A118 to determine whether the security information suitable for the communication line and communication infrastructure protocol has been returned, and only when the result is good, the higher-order transmission signal generation unit 1A113, arithmetic control unit 1A112, display control It is sent to the section 1A111.

Therefore, it is possible to avoid unauthorized access, ensure detection of information falsification, discard falsification data, and delete data due to deterioration of communication lines.
Error detection can be performed reliably, and the reliability of the inching operation control system can be maintained.

Although the fourth embodiment has described the configuration and function of the control unit 1A11 of the control device 1A1, the control units 1A21, 1B11, 1B2R1 of the other control devices 1A2, 1B1, 1B2R are controlled by The configuration and function are the same as those of the control unit 1A11 of the device 1A1, and illustration and description thereof will be omitted.

[0069]

According to the invention of the inching operation control system described in claim 1, the inching operation control system system comprises a plurality of inching operation control system systems having different communication protocols, and the inching operation control system system control devices correspond to each other based on the inching operation. In an inching operation control system for performing inching control on a controlled object, a plurality of inching operation control system systems having different communication protocols are connected by a communication line, and a protocol conversion function is provided for each of the plurality of inching operation control system systems having different communication protocols. Since the inching control target of the inching operation control system system having different communication protocols is controlled by inching operation via the protocol conversion function section by inching operation, a plurality of inching operations having different communication protocols are performed. In control system based also constitute inching operation control system, there is an effect that can allow inching operation control of the inching control object across different plurality of inching operation control system system having a communication protocol.

The invention of the inching operation control system according to claim 2 is the inching operation control system according to claim 1, wherein the inching control target to be controlled based on the inching operation by the control device is the control device. However, since the selection is made over a plurality of inching operation control system systems based on the inching operation, even if an inching operation control system is configured with a plurality of inching operation control system systems having different communication protocols, In addition to the effect of enabling inching operation control of the inching operation control target across a plurality of inching operation control system systems with different protocols, the control is performed on the device that performs selection across the plurality of inching operation control system systems. The system configuration is simple because there is no need to install it separately from the device. There is an effect that the reliability of the system is increased.

The invention of an inching operation control system according to a third aspect is the inching operation control system according to any one of the first and second aspects, wherein at least one control device and an inching control target are provided. Since a wide area network is provided in a part of the communication line and the inching rate is changed according to the load condition of the communication line, inching operation is performed in a plurality of inching operation control system systems having different communication protocols. Even if the control system is configured, inching operation control of the inching operation target can be performed across multiple inching operation control system systems with different communication protocols. There is an effect that stable inching operation control can be performed.

The invention of an inching operation control system according to a fourth aspect is the inching operation control system according to any one of the first and second aspects, wherein at least one control device and an inching control target are provided. Since a wide area network is provided in a part of the communication line and a data error detection function unit is provided, even if an inching operation control system is configured by a plurality of inching operation control system systems having different communication protocols. , In addition to the effect of enabling inching operation control of an inching control target across a plurality of inching operation control system systems with different communication protocols, a communication line between at least one control device and the inching control target Reliable inching operation control system, even if the system configuration has a wide area network partially There is an effect that can be maintained.

The invention of an inching operation control system according to a fifth aspect is the inching operation control system according to any one of the first to fourth aspects, wherein the time slot before the inching operation amount in the control signal is added. Since the discrimination signal of inching operation and inching non-operation for each inching control target is put in the time slot of, even if the inching operation control system is configured by a plurality of inching operation control system systems having different communication protocols. In addition to the effect that the inching operation control of the inching operation target can be performed across a plurality of inching operation control system systems having different communication protocols, the processing speed can be increased.

[Brief description of drawings]

FIG. 1 is a connection diagram showing an overall configuration of an inching operation control device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a control unit in the control device according to the first embodiment of the present invention.

FIG. 3 is a diagram for explaining a function of a control unit in the control device according to the first embodiment of the present invention.

FIG. 4 is a diagram showing a configuration of an operation frame of a periodic transmission / reception signal according to the first embodiment of the present invention.

FIG. 5 is a diagram showing an arrangement example of data in an operation frame of a periodic transmission / reception signal according to the first embodiment of the present invention.

FIG. 6 is a diagram showing a configuration of an operation frame of a periodic transmission / reception signal according to a second embodiment of the present invention.

FIG. 7 is a configuration diagram of a control unit in a control device according to a third embodiment of the present invention.

FIG. 8 is a connection diagram showing an overall configuration of an inching operation control device according to a fourth embodiment of the present invention.

FIG. 9 is a configuration diagram of a control unit in a control device according to a fourth embodiment of the present invention.

[Explanation of symbols]

A, B Multiple inching operation control system systems with different communication protocols, 1A1, 1A2, 1B1, 1B2 control device, 2A,
2B, 2A1A13A1, 2A1A13A2, 2B1A13B1, 2B1A13B2, 2A1A2
3A1, 2A1A23A2, 2B1A23B1, 2B1A23B2, 2A1B13A1, 2A1B1
3A2, 2B1B13B1, 2B1B13B2 communication line, 1A115 protocol conversion function part, 2I, 2I2A2B, 2I1B2R wide area network
1A118 data error detection function block, T3A1, T3A2, T3A
3, T3A4 Inching Time slots that carry the inching operation and non-inching operation signals for each control target, T41B, T42B, T43B, T44B Time slots that carry the inching operation amount.

Claims (5)

[Claims] 1. An inching operation control system, comprising a plurality of inching operation control system systems having different communication protocols, wherein a controller of each inching operation control system system performs inching control of a corresponding inching control target based on an inching operation, wherein the communication is performed. A plurality of inching operation control system systems with different protocols are connected by a communication line, and a protocol conversion function unit is provided in each of the plurality of inching operation control system systems with different communication protocols, and the protocol conversion function unit is operated by inching operation. The inching operation control system is also characterized in that the inching control target of an inching operation control system system having a different communication protocol is also controlled. 2. The inching operation control system according to claim 1, wherein the inching control target to be controlled based on the inching operation by the control device is a plurality of inching operations performed by the control device based on the inching operation. An inching operation control system characterized by being selected over control system systems. 3. The inching operation control system according to any one of claims 1 and 2, wherein a wide area network is provided in a part of a communication line between at least one control device and an inching control target. An inching operation control system characterized by changing the inching rate according to the load condition of the communication line. 4. The inching operation control system according to any one of claims 1 and 2, wherein a wide area network is provided in a part of a communication line between at least one control device and an inching control target. In addition, the inching operation control system is provided with a data error detection function unit. 5. The inching operation control system according to claim 1, wherein an inching operation is performed for each inching control target in a time slot before a time slot in which an inching operation amount in a control signal is added. And an inching operation control system, which carries a discrimination signal indicating that the inching operation is not being performed.