JPH07123480A - Communication equipment specifying method - Google Patents

Abstract

PURPOSE:To specify a communication equipment under the execution of communication at present by operating the recognition output part of the communication equipment connected to a common bus by receiving a prescribed signal outputted to the bus. CONSTITUTION:A portable setter 9 is connected to a nearby field bus 6, where a sensor 3a exists, and a turn-on signal Sa is transmitted. Therefore, an indicator 7a is turned on for ten seconds. At this time, when the indicator of the sensor to change the setting just before a user is turned on, it is confirmed that this sensor is the sensor 3a to change the setting. Next, the change data of setting corresponding to a valve 2a are transmitted together with the identification signal of this sensor 3a. Thus, since the indicator of the correspondent sensor is turned on by outputting the turn-on signal onto the bus 6, it can be immediately confirmed where the target sensor is installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication device specifying method for specifying which communication device is communicating when a plurality of communication devices are connected to a common bus.

[0002]

2. Description of the Related Art In plant equipment, a large number of sensors are installed in a large number of equipment, and the state of the equipment can be monitored by these sensors. Here, FIG. 2 is a configuration diagram showing an example of an equipment monitoring system for monitoring and controlling the state of each place of the plant equipment. In the figure, 21 is plant equipment, A, B, C are each equipment of the plant equipment 21,
22a, 22b and 22c are pipes for facilities A, B and C, respectively, and 23a, 23b and 23c are pipes 22a and 2 respectively.
A sensor for detecting the flow rate of the fluid in 2b, 22c, 24
a, 24b and 24c are pipes 22a, 22b and 2 respectively.
A valve for adjusting the flow rate of the fluid in 2c, 25 is a sensor 2
A monitoring controller for controlling the opening / closing degree of the corresponding valves 24a, 24b, 24c by flow rate signals from 3a, 23b, 23c, and 26 are sensors 23a, 23b, 2
3c, valves 24a, 24b, 24c, monitoring control device 2
5 is a field bus to be connected.

The monitor controller 25 is, for example, a pipe 22a.
The flow rate of the fluid flowing through is grasped by the flow rate signal from the sensor 23a, and the opening / closing degree of the valve 24a is controlled so that this flow rate signal becomes a predetermined control amount. Here, the monitoring control device 25 recognizes the signal from the sensor 23a by the identification signal (tag name) transmitted from now on. Then, the monitoring control device 25 uses the sensor 23.
Based on the flow rate signal from a, a control signal for controlling the opening / closing degree of the valve 24a is sent to the field bus 26 together with an identification signal for identifying the valve 24a. Since the control signal for controlling the opening / closing degree of the valve 24a is transmitted to the field bus 26 together with the identification signal for identifying the valve 24a, the valves 24b and 24c do not receive this control signal.

Here, the monitoring controller 25 and the plant equipment 21 are installed separately from each other. For this reason, where each sensor, valve, etc. is arranged, this is connected to the fieldbus 26 using a portable setting device to check the operation and change the settings of each sensor, valve, etc. . In this case also, the portable setting device identifies the device to be checked and the setting target by using the identification signal for specifying the check target and the setting target.

[0005]

Since the conventional configuration is as described above, even if the sensor 23a is installed in the pipe 22b by mistake and the sensor 23b is installed in the pipe 22a, the difference cannot be determined. There was a problem. In particular, if the sensors, valves, etc. have the same appearance, product model number, specifications, etc., there is a problem that the differences cannot be recognized even if they are installed in different locations.

For example, when the setting of the sensor 23a is changed, a portable setting device is connected to the fieldbus 26 near the sensor 23a, and the setting change data corresponding to the valve 22a together with the identification signal of the sensor 23a. To send. However, if the sensor 23a and the sensor 23b are installed in a wrong manner, they will be
This change data is sent to the sensor 23a installed in the pipe 22b because it cannot be distinguished from the specifications. In this state, the data from the valve 22b in which different sensing target fluids are flowing causes the valve 2 to
4a is to be controlled, and it is very difficult to detect this difference.

The present invention has been made in order to solve the above problems, and makes it possible to externally identify a communication device such as a sensor or an actuator, which is a communication target connected to a field bus. The purpose is to

[0008]

According to the communication device identifying method of the present invention, a communication device has a recognition output unit which is in a recognizable state by being connected to a bus and operating, and a predetermined recognition to be output to the bus. It is characterized in that the recognition output unit corresponding to the recognition signal is operated for a predetermined time by the signal.

[0009]

When the cognitive output unit operates for a predetermined time, the communication device in which it is installed is in a different state from the communication device in which the cognitive means that is not operating is installed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing a configuration of a supervisory control system using a communication device identifying method according to an embodiment of the present invention. In the figure, 1 is plant equipment, A, B and C are equipments of the plant equipment 1, 2a, 2b and 2c are pipes of equipments A, B and C, 3a, 3b and 3c are pipes 2a and 2b, respectively. Sensors (communication devices) for detecting the flow rate of the fluid in 2c are pipes 2a, 2a, 4b, 4c, respectively.
Valve for adjusting the flow rate of fluid in b and 2c (communication equipment)
Is.

Further, reference numeral 5 designates corresponding valves 4a, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4b, 4bb, 4bb, 4bb, 4bb, 4bb, 4bb, 4bb, 4bb, 4bb, 4bb, 4bb, 4bb, 4bb, 4bb, 4bb, 4bb, 4bb, 4bb, 4bb, 10bb
A supervisory controller that controls the opening / closing degree of 4c, and 6 is a field bus connected to the sensors 3a, 3b, 3c, valves 4a, 4b, 4c, and supervisory controller 5. And 7
a, 7b, 7c are installed in the sensors 3a, 3b, 3c, respectively, and indicators (recognition output units) 8a, 8b, 8c that emit light for a certain time when a predetermined signal is input, are installed in the valves 4a, 4b, 4c, respectively. , Indicator that emits light for a certain time when a predetermined signal is input (cognitive output unit),
Reference numeral 9 is a portable setting device for checking the operation of sensors and valves and changing the settings.

Here, the portable setting device 9 outputs the lighting signal Sa,
It is possible to output Sb, Sc, Ba, Bb, Bc (recognition signal). When the sensor 3a receives the lighting signal Sa output on the bus 6, this triggers the sensor 3a to light its own indicator 7a for 10 seconds. The indicator 7a does not light with a signal other than the lighting signal Sa. Similarly, the sensor 3b turns on its own indicator 7b by the lighting signal Sb for 10 seconds, and the sensor 3c turns on its own indicator 7c by the lighting signal Sc.
Lights for 10 seconds. Then, the bulb 4a lights its own indicator 8a for 10 seconds by the lighting signal Ba, the bulb 4b lights its own indicator 8b for 10 seconds, and the bulb 4c lights the lighting signal B.
The indicator 8d of itself is turned on by c for 10 seconds.

The operation of confirming the installation position of each sensor or valve connected to the field bus 6 will be described below. Here, the case where the setting of the sensor 3a is changed will be described. First, the portable setting device 9 is connected to the fieldbus 6 near the sensor 3a, and the lighting signal Sa is transmitted. As a result, the indicator 7a lights up for 10 seconds. At this time, if the indicator of the sensor in front of the person who is trying to change the setting lights up, it is confirmed that this sensor is the sensor 3a that is trying to change the setting. Then, the setting change data corresponding to the valve 2a is transmitted together with the identification signal of the sensor 3a.

As shown above, by outputting a lighting signal on the fieldbus 6, the indicator of the sensor corresponding to this lights up, so it is possible to immediately confirm where the target sensor is installed. You can This also applies to other sensors and valves. If the portable setting device 9 is connected to the field bus 6 and a lighting signal Ba is output on the field setting device 6, the bulb 4a which receives the lighting signal Ba
This is a trigger, and the indicator 8a of own 10
Turn on for seconds.

For example, there is a loop check work for checking the operation of the valve and the detection state of the sensor by using a pseudo control signal. In this loop check, when a pseudo control signal is output on the fieldbus 6 using the portable setting device 9, if the lighting signals of the sensor and the valve to be checked are output at the same time, the loop check can be performed. At the same time, it will be possible to check the piping related at the same time.

In the above embodiment, each indicator is lit for 10 seconds when receiving a predetermined signal, but the present invention is not limited to this. The lighting time may be 5 seconds or may be blinking at intervals of 0.5 seconds for 10 seconds. Further, each indicator may be turned on only while receiving a predetermined signal. Then, instead of emitting light, a sound may be emitted, or these may be combined.

[0017]

As described above, according to the present invention, the cognitive output unit of the communication device connected to the common bus operates in response to the predetermined signal output to the bus. Since the state is different from the cognitive output unit of the communication device, there is an effect that the communication device currently communicating can be specified. Therefore, it becomes possible to confirm the arrangement of the communication device, and it becomes possible to detect an incorrect arrangement or the like.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a configuration of a supervisory control system using a communication device identifying method according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing an example of an equipment monitoring system in which plant equipment monitors and controls the state of each place.

[Explanation of symbols]

 1 Plant equipment 2a, 2b, 2c Piping 3a, 3b, 3c Sensor 4a, 4b, 4c Valve 5 Monitoring and control device 6 Fieldbus 7a, 7b, 7c, 8a, 8b, 8c Indicator A, B, C Equipment

Claims (1)

[Claims] 1. A control system in which a control device and a plurality of communication devices that perform communication such as data exchange with the control device are connected via a common bus, wherein the communication device is connected to the bus. A communication device characterized by having a cognitive output unit that is in a recognizable state by operating, and by operating a cognitive output unit corresponding to this recognition signal for a predetermined time by a predetermined recognition signal output to the bus. Identification method.