JPH044303U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a block diagram of a 2-port memory according to an embodiment of this invention, Fig. 2 is a diagram showing an example of a dedicated instruction for a special unit according to an embodiment of this invention, and Fig. 3 is an embodiment of this invention. FIG. 4 is a flowchart showing the contents of the processing of the special unit according to the invention, FIG. 4 is a diagram showing an example of a sequence program for explaining the operation according to an embodiment of this invention, and FIG. 5 is a block diagram of a programmable controller using the special unit. However, it is completely the same as the conventional example and the embodiment. Fig. 6 is a diagram showing the configuration of a conventional 2-port memory, Fig. 7 is a configuration diagram of a sequence instruction for accessing a conventional special unit, and Fig. 8 is an example of a sequence program for explaining the conventional operation. Diagram showing. FIG. 9 and FIG. 10 are diagrams showing a conventional example and an example of a sequence program for explaining another example. In the figure, 1 is a programmable controller, 2 is a peripheral device, 3 is an input unit, 4 is an output unit, 5 is a positioning unit, and 6 is a servo system. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] It is equipped with a special function unit that performs special control over a controlled object, and has an instruction specific to the special function unit as an instruction for reading and writing data to the special function unit, and the specific instruction is A programmable controller characterized by being expressed in characters.