JPH03201116A - Programmable controller - Google Patents

Abstract

PURPOSE:To release a user from the troublesome calculating work by automatically calculating the total current consumption of a peripheral device from the current consumption of each previously stored peripheral device and a device-sorted code read out from a practically connected peripheral device. CONSTITUTION:When a command for computing the total current consumption is sent from a programmer 2 to a control device 1, a CPU 6 reads out device- sorted codes stored in an option unit 3, an input unit 4 and an output unit 5 and stores the read contents in a RAM 9. Then, the CPU 6 computes the sum of current consumption values based upon the device-sorted code data stored in the RAM 9 and the device-sorted current consumption data previously stored in a ROM 8. The computed result is informed to a user through the display part of the programmer 2. Consequently, the user can be released from the troublesome calculation work of the total current consumption and the generation of an accident due to excess capacity can be previously prevented.

Description

[Detailed description of the invention] Industrial applications The present invention relates to programmable control devices.

Conventional technology Conventionally, in order to ensure power supply capacity according to the peripheral devices connected to a programmable control device, the total amount of current consumption is calculated by the user based on the current consumption i of each peripheral device. was common.

Further, in order to omit such calculation of the total amount of current consumption, a power supply unit may be installed in all peripheral devices. However, even in this case, it is necessary to check whether the amount of current consumed by each peripheral device is within the capacity of the power supply unit installed in that peripheral device.

Problems to be Solved by the Invention However, as described above, calculating the total amount of current consumption from the amount of current consumed by each peripheral device has the problem that the work is cumbersome.

Also, if you neglect or make incorrect calculations, the number of elements that turn on at the same time while the system is running increases, or if you connect a programmer, the power supply capacity will be exceeded and the system will stop. There was a possibility.

Therefore, an object of the present invention is to provide a programmable control device that can automatically calculate the total current consumption of connected peripheral devices without requiring troublesome calculation processing by the user.

Means for Solving the Problems The present invention provides a control device that variably controls peripheral devices according to a program grade given by a programmer, which includes a model identification code assigned to each of a plurality of peripheral devices connectable to the control device; A first memory stores the current consumption amount of each peripheral device in a one-to-one correspondence, and a memory of each peripheral device connected to the control device based on the total current consumption calculation program given by the programmer. a second memory for storing the read model identification code of each peripheral device; information on current consumption stored in the first memory; The device is characterized by comprising a total current consumption calculating means for calculating and outputting the total current consumption of all peripheral devices connected to the control device from the model identification code stored in the second memory. It is a programmable control device.

According to the present invention, the connection is determined based on the amount of current consumed by each peripheral device stored in the first memory and the model identification code read from each peripheral device actually connected to the control device. The total current consumption of the peripheral devices being used is automatically calculated and output.

Embodiment FIG. 1 shows a control device 1 that is an example of the present invention, a programmer 2 that inputs programs to the control device 1, an optional unit 3, an input crab unit 4, and an output crab unit 5 as peripheral devices. FIG. 2 is a block diagram schematically showing a connected configuration.

The control bag R1 is connected to the central processing unit t (Central
Processing Unit (hereinafter abbreviated as CPU) 6, interface 7, read-only memory (R
eadOnly Memory (hereinafter abbreviated as ROM) 8. Read-and-write memory (Rando-^c)
eess Memory: Hereinafter abbreviated as RAM)
Including 9 etc.

Further, the CPU 6, interface 7, ROM 8 and RAM 9 are connected to the option unit 3, the input unit I/4 and the output unit 5 via a pass line 10.

Peripheral devices such as the optional unit 3, input unit 4, output unit 5, etc. have storage units installed therein (storage unit C1 in the option unit 3, storage unit D in the input unit 4, and storage unit E in the output unit 5). Stores a model identification code for identifying each model.

On the other hand, in a specific storage area A of the ROM 8, the model identification codes of each of the plurality of peripheral devices (including the currently connected peripheral device) that can be connected to this control device l and the current consumption of each peripheral device are stored. Data of a comparison table that has a one-to-one correspondence with the amount is stored.

FIG. 2 is a schematic diagram showing a specific example of the data of the comparison table stored in the storage area A of the ROM 8. That is, in FIG. 2, for example, the model identification code 1 and the current consumption amount 125 of the peripheral device to which that code is assigned.
(mA), and the model identification code 2 and the current consumption of the peripheral device to which that code is assigned 1540 (mA)
are stored in a one-to-one correspondence.

The RAM 9 also contains model identification information read from the storage sections C, D, and E of each peripheral device (in Fig. 1, the option unit 3, input unit 4, and output unit 5) connected to the control device l. A specific storage area B is prepared for storing the code as a table.

FIG. 3 is a schematic diagram showing a specific example of data stored in the storage area B of the RAM 9. That is, in FIG. 3, model identification code 2 is associated with rack number O and slot number O, model identification code 1 is associated with rack number O and slot number 1, and rack number 0. Model identification code 3 associated with slot number 2
are written in each. In this case, the rack number is the number of the mounting frame in which the peripheral device is mounted, and the slot number is a number that identifies a plurality of peripheral device mounting grooves set in the mounting frame.

Next, the operation of outputting the total current consumption 131E by the control device 1 will be explained with reference to FIGS. 2 and 3.

First, when the programmer 2 sends a command to calculate the total current consumption to the control device 1, the CPU of the control device 1
6 is the storage section C of each of the currently connected option unit 3, input unit 4, and output unit 5;
Read the model identification code stored in D and E, and
Store in storage area B of AM9. In this case, for convenience of explanation, for example, the model identification code of option unit 3 may be set to 1.
, the model identification code of the incoming crab knit 4 is 2, and the model identification code of the outgoing crab knit 5 is 3.

Next, the CPU calculates the total amount of current consumption based on the data in the table shown in FIG. 3 stored in storage area B of RAM 9 and the data in the table shown in FIG. 2 stored in advance in storage area A of ROM 8. .

That is, in this case, the current consumption amount 125 (
mA), 540 (mA), and 440 (mA), and calculate their total sum. The determined sum is reported to the user as the total amount of current consumption through a display section (not shown) of the programmer 2.

The contents displayed on the display section of the programmer 2 include, for example, when a plurality of additional mounting frames 12 to 14 are additionally mounted in addition to the basic mounting frame 11 as shown in FIG. Based on the total current consumption calculated by , it is also determined which expansion mounting frame other than the basic mounting frame 11 requires the power supply unit.

Effects of the Invention As described above, according to the present invention, the amount of current consumed by each peripheral device stored in advance in memory and the model identification code of each peripheral device actually connected to the control device can be determined. The configuration calculates and outputs the total current consumption of the connected peripheral devices by comparing the total current consumption, which relieves the user from the trouble of calculating the total current consumption, and also reduces the current consumption to Accidents such as the system being stopped due to exceeding its capacity can be prevented.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a configuration in which a plurality of peripheral devices and a programmer are connected to a control device according to an embodiment of the present invention, and FIG. 2 shows data stored in a specific storage area of a ROM in the control device. A schematic diagram showing a specific example, FIG. 3 is a schematic diagram showing a specific example of data stored in a specific storage area of RAM in the control device, and FIG. 4 shows an additional mounting frame added in addition to the basic mounting frame. It is a block diagram showing an example of a case. DESCRIPTION OF SYMBOLS 1... Control device, 2... Programmer, 3... Option unit, 4... Input crab unit, 5... Output crab unit, 6... CPtJ, 7... Interface, 8... ROM, 9...RAM

Claims (1)

[Scope of Claims] A control device that variably controls peripheral devices according to a program given by a programmer includes a model identification code assigned to each of a plurality of peripheral devices connectable to the control device, and a model identification code of each peripheral device. The first memory stores the amount of current consumption in one-to-one correspondence, and the amount of current consumed is stored in the storage section of each peripheral device connected to the control device based on the total amount of current consumption calculation program given by the programmer. A code reading means for reading a model identification code; a second memory for storing the read model identification code of each peripheral device; and a second memory for storing current consumption information stored in the first memory and the second memory. A programmable control device comprising a total current consumption calculating means for calculating and outputting the total current consumption of all peripheral devices connected to the control device from a stored model identification code. .