JPH0619008U - Program controller - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a program controller in which each program pattern can be easily managed even when a large number of program patterns are stored. [Composition] A communication interface section (15) connected to an external setting device, a parameter storage section (12) for storing parameters necessary for operation, a temperature raising process, an isothermal process and a temperature lowering process of a furnace to be controlled. Specific program of
In a program controller having a program / pattern storage section (14) for storing a plurality of sets of patterns, a parameter name section (11) for storing a name corresponding to the parameter storage section, and each stored in the program / pattern storage section. A pattern name section (13) for storing the name of the program pattern is provided, and the character string stored in the parameter name section and the pattern name section is set / read out with the external setting device via the communication interface section. It is characterized by doing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a program controller suitable for use in temperature control of electric furnaces, small furnaces, and the like, and more particularly to improvements in which parameter setting work by an external device can be easily performed.

[0002]

[Prior art]

 The applicant of the present invention has proposed a program controller in which parameters can be easily set in JP-A-63-226703, etc., and this technology is used in Yokogawa Technical Report Vol. 34, p. 227 (1990). The disclosed indicating controller is disclosed. 3A and 3B are explanatory diagrams of conventional control parameter setting, where FIG. 3A shows a case where an individual setting device is used and FIG. The program controller 10 has a parameter storage unit 12 for operating parameters and setup parameters, and a program / pattern storage unit 14 for representing a heat treatment process. The individual setting device 20 is a small terminal, and the signal line 22 is connected to the program controller 10 to set necessary data in the parameter storage unit 12 and the program / pattern storage unit 14.

When associating a plurality of program controllers 10, they are connected to the central setting device 30 via a communication line 32. The central setting unit 30 is a general computer and sets necessary data in the parameter storage unit 12 and the program / pattern storage unit 14 of any of the program controllers 10 connected to the communication line 32. ing. This program controller 10 is specified by designating an address to each program controller 10 in advance and transmitting the program pattern together with this address on the side of the central setting unit 30.

FIG. 4 is an explanatory diagram showing an example of a program pattern. There are three types of processes: temperature raising process, isothermal process, and temperature lowering process. In each process, the initial and final temperatures and the time between them are set. One program pattern is represented by segments that represent a heating process, an isothermal process, and a cooling process. Here, 15 program patterns can be stored in the program controller 10, and one is selected from the stored ones during operation.

[0005]

[Problems to be solved by the device]

 However, when the number of program patterns stored in a single program controller is large, there is a problem that it is easy for the operator to make an error by identifying only the pattern number. When a plurality of program controllers are connected via a communication line, it is necessary to manage addresses in addition to program patterns, which causes a problem of further complication. The present invention solves such a problem, and an object thereof is to provide a program controller in which each program pattern can be easily managed even when a large number of program patterns are stored.

[0006]

[Means for Solving the Problems]

 The present invention that achieves such an object stores a communication interface unit (15) that receives parameters and program patterns transmitted from an external setting device, and stores parameters necessary for operation such as operation parameters and setup parameters. And a program pattern storage unit (14) for storing a plurality of specific program patterns for the temperature rising process, the isothermal process, and the temperature lowering process of the furnace to be controlled. The controller has the following configuration.

That is, a parameter name section (11) for storing the name corresponding to the parameter storage section, and a pattern name section (13) for storing the name of each program pattern stored in the program pattern storage section. The character string stored in the parameter name part and the pattern name part is exchanged with the external setting device via the communication interface part, or the parameter name part and the pattern name part are exchanged by the external setting device. Characterized by storing a character string.

[0008]

[Action]

 The parameter name section stores a character string corresponding to the parameter storage section, and the pattern name section stores a character string corresponding to each program pattern stored in the program pattern storage section. Since the external setting device can access the stored contents of the parameter name part and the pattern name part via the communication interface part, the identification of the parameters and each program pattern can be clearly recognized.

[0009]

【Example】

 The present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram showing an embodiment of the present invention. In the figure, the program controller 10 is connected to an individual setting device 20 via a signal line. The program controller 10 stores parameters, parameter names, 15 program patterns and pattern names. The individual setter 20 can access the parameters and the parameter names as well as the 15 program patterns and pattern names, so that the contents can be written and the rewriting sequence can be referred to.

FIG. 2 is a functional block diagram for explaining details of the program controller. In FIG. 2, the same elements as those in FIG. 3 are designated by the same reference numerals and the description thereof will be omitted. In the figure, a parameter name section 11 stores the name corresponding to the parameter storage section 12, and a pattern name section 13 stores the name of each program pattern stored in the program pattern storage section 14. . The communication interface section 15 is connected to the parameter name section 11, the parameter storage section 12, the pattern name section 13, and the program / pattern storage section 14 inside the program controller 10 via an internal bus and at the same time as an external unit. The individual setting device 20 and the central setting device 30 are connected via a connector or the like. The controller function unit 16 is a general one, and the operating parameters are set from the parameter storage unit 12 and the program pattern specified in the program pattern storage unit 14 is read to control the control target. The electric furnace 40 is operated. In controlling the electric furnace 40, the temperature inside the furnace is measured by a thermometer such as a thermocouple, and the energization state of the heating wire is adjusted so that this temperature matches the program pattern.

The operation of the apparatus thus configured will be described. First, setting / reading by the external setting device of the parameter name section 11 will be described. Send "NA parameter name" when setting from the setter to the program controller. Here, the parameter name is a character string, for example, kanji, hiragana, katakana, alphanumeric characters, etc. within 12 characters. In this case, an answer back is made from the program controller to the setting device in order to confirm the setting. When reading, “NA” is sent from the setter to the program controller. In response to this, the program controller sends back the "NA parameter name" to the setter side.

Next, setting / reading by the external setting device of the pattern name portion 13 will be described. When setting from the setting device to the program controller, send "PN n, pattern name". Here, the pattern name is a character string like the parameter name, and n is the program pattern number. In this case, an answer back is made from the program controller to the setter in order to confirm the settings. For reading, the setter sends "PN n" to the program controller. In response to this, the program controller returns "PN n, pattern name" to the setter side.

In the above embodiment, the setting / reading of the parameter name part 11 and the pattern name part 13 by the individual setting device 20 has been described, but when the central setting device 30 is used, each program adjustment is performed. The same can be done by adding an address that identifies the total.

[0014]

[Effect of device]

 As described above, according to the present invention, the parameter name section 11 and the pattern name section 13 are provided to enable setting / reading from the external setting device. This has the effect of making it easy and reliable for the operator to determine each program pattern.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is a functional block diagram illustrating details of a program controller.

FIG. 3 is an explanatory diagram of conventional control parameter setting.

FIG. 4 is an explanatory diagram showing an example of a program pattern.

[Explanation of symbols]

 10 Program Controller 11 Parameter Name Section 12 Parameter Storage Section 13 Pattern Name Section 14 Program / Pattern Storage Section 15 Communication Interface Section 20 Individual Setting Device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Shinichi Maeda 2-932 Nakamachi, Musashino City, Tokyo Yokogawa Electric Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A communication interface section (15) for receiving parameters and program patterns transmitted from an external setting device, and a parameter storage section (12) for storing parameters necessary for operation such as operation parameters and setup parameters. And a program pattern storage unit (14) for storing a plurality of specific program patterns of a temperature raising process, an isothermal process, and a temperature lowering process of a furnace to be controlled, wherein the parameter storage unit A parameter name section (11) for storing the corresponding name and a pattern name section (13) for storing the name of each program pattern stored in the program pattern storage section are provided, and via the communication interface section , It is stored in the parameter name part and the pattern name part with the external setting device. To transfer a string, or program controllers, characterized in that to store the string to the parameter name portion and the pattern name portion by an external setting device.