JPH0720721Y2 - Programmable controller programmer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention provides a programmer for inputting a sequence program to a programmable controller.

[Prior Art] In the programmable controller programmer shown in FIG. 5, in the case of inputting a command including a plurality of steps as shown in FIG.
It has been customary to display such as shown in FIG. 7 (a) or (b). FIG. 7A shows a display method in which the display of the display unit 1 scrolls up every time each step is input, and FIG. 7B shows the display system of the display unit 1 when the first step is input. The instruction is displayed in the upper row, and each time an operand for that instruction after the second step is input, a dot (.) Is displayed as many as the number of operands input to the left of the instruction in the upper row.

The procedure of the command in FIG. 6 is (D0) + (D1) → (D2), but the procedure of key input of the key input section 2 is to press the “+” key, then the “ENT” key, Enter the "+" command. The display at this time is as shown in (a) and (b) of Fig. 7, and then press the "D" key and "0" key, and then press "ENT".
Enter the operand "D0" by entering the key. The display at this time is as shown in FIGS. 7 (a) and 7 (b). Similarly, use the "D" key, "1" key, and "ENT" key to input the operand "D1", and then press the "D" key,
The "2" key and the "WRT" key are used to input the operand "D2" and finish the instruction input. The display at the time of inputting these is respectively.

[Problems to be solved by the invention] In the display as shown in FIGS. 7 (a) and 7 (b), the number of operands required for the instruction does not appear in the instruction display in any case. , I could not input unless I knew in advance how many operands the instruction required.

In particular, recent programmable controllers have become more sophisticated, and the number of instructions over multiple steps has expanded to tens to hundreds of types, and the number of steps differs depending on each instruction. It was very inconvenient that the number of operands required for the instruction could not be confirmed when one step was input.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a programmable controller programmer that makes it easier to understand the input of instructions in a plurality of steps.

[Means for Solving the Problems] The programmer of the present invention displays the number of operands of a multi-step instruction in the first step.
When the step number is input, the number of operands required for the instruction is read from the instruction table and displayed on the display unit, and the number of read operands is written and then written every time one step of the instruction is input. It has a counter function of subtracting one by one.

[Operation] When a command of a plurality of steps is keyed in, when the first step is input, the number of operands required for the command is read from the command table and displayed on the display unit, and at the same time, the read operands are read. The number written in is written and then the written number is decremented by 1 each time one step of the instruction is input. In other words, if there is a key input in the first step, the number of operands in that instruction is displayed on the display unit, the operator is made to recognize the number of operands, and then the number displayed is subtracted for each step, and the remaining number of operands is displayed in the operator. You can learn it.

[Embodiment] FIG. 1 shows the circuit configuration of the programmer of the embodiment, and the program of the embodiment includes a display unit 1, a key input unit 2, a CPU 3 for controlling the operation of the programmer, an operation program of the CPU 3, and the number of operands. ROM4 that stores the instruction table shown in Fig. 3 written for each instruction, a temporary data storage area,
It comprises a RAM 5 for obtaining a work area and the like when the CPU 3 operates, and a communication unit 6 for exchanging data with the programmable controller.

FIG. 2 shows a flow chart of the display operation of the embodiment. When inputting a command of a plurality of steps, first, a key input corresponding to a command of a plurality of steps, for example, a "+" command, and an "ENT" key indicating the input. Is input, the number of operands is read from the instruction table, and the number of operands read by the counter function of the CPU 3 is written to a predetermined area of the RAM 5. Then, the instruction and the number of operands written in the counter function are displayed in the upper part of the display unit 1.

After this display, it is determined whether or not there is a key input of the operand, and if this determination is made, the contents of the operand key input are displayed in the lower part of the display unit 1. Then, it is judged whether or not the number of operands written by the counter function has become 1, and if this number is not 1, the count value C written in the counter function after inputting the "ENT" key is decremented by "1" to obtain the number of operands described above. Rewrite the display with the count value C. If the number of displayed operands is 1, the "WRT" key is pressed instead of the "ENT" key input, and the program input ends. When this ends, the display unit 1
Erase the upper and lower display of.

Steps (a) to (4) of FIG. 4 show display examples when the number of operands is displayed in dots, and steps (b) to (b) of FIG. 4 show a display example in which the number of operands is shown in numbers instead of dots. Is shown. Further, the steps (c) to (c) of FIG. 4 show an example in which the meaning of operands is displayed together with the number of operands. In the figure, S of SSD is a source and D is an abbreviation of destination. In this case, it is indicated that the first operand and the second operand are sources, and the third operand is a destination. Then, the SSD display is decreased by one according to the operand input.
As shown in FIGS. 4 (a) to 4 (c), when the first step of an instruction involving a plurality of steps is input, the number of operands that follow is known, and the number decreases each time an operand is input. You can see how many operands are input later.

[Advantages of the Invention] When an instruction having a plurality of operands is input, the present invention reads out the number of operands required for the instruction from the instruction table when the instruction is input in the first step, and displays it on the display unit. , A counter function of writing the number of read operands and decrementing the written number by 1 each time one step of an instruction is input thereafter, so when inputting a plurality of steps Since it is clearly displayed whether to input, there is an effect that it is possible to input smoothly without anxiety.

[Brief description of drawings]

FIG. 1 is a circuit block diagram of an embodiment of the present invention, FIG. 2 is a flow chart of the same as above, and FIG.
4 (a), (b), and (c) are explanatory views of the same display example, FIG. 5 is a front view of the programmer, FIG. 6 is an explanatory view of an example of instructions of a plurality of steps, and FIG. 7 (a) ( b) is an explanatory diagram of a display example of a conventional example. 1 ... Display part, 2 ... Key input part, 3 ... CPU.

Claims (1)

[Scope of utility model registration request] 1. When a command having a plurality of steps of operands is input, when the first step of the command is input, the number of operands required for the command is read from the command table and displayed on the display unit, and the reading function. A programmable controller programmer having a counter function of writing the number of issued operands and decrementing the written number each time one step of an instruction is input.