JPH10271058A - Phs communication unit for programmable controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize data communication from a controller even if a wire network does not exist by communicating data from the programmable controller between the controller and a computer network through a PHS communication unit and ISDN. SOLUTION: Data from equipment/device is communicated to a base station without wire from the programmable controller through the PHS communication unit. Data is transmitted from the base station to a computer or the programmable controller on the wire network via ISDN, TA corresponding to PIAFS and a router. Instruction data from the computer or the programmable controller on the network is transmitted to the programmable controller from a PHS communication unit by an inverse flow and it is transmitted to the device/equipment. Thus, data can be communicated without wire from the programmable controller by using the PHS communication unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a technology for wirelessly communicating data from a programmable controller using a PHS communication function.

[0002]

2. Description of the Related Art Conventionally, data communication from a programmable controller has been performed using a wired network. That is, data that reports the production status from the production equipment, data that reports the temperature, pressure, and level of the equipment,
All instructions for changing the type or changing the setting of the condition have been made via a wired network.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide means for enabling data communication from a programmable controller even without a wired network.

[0004]

The present invention (1) comprises a PHS communication unit and a programmable controller for processing and controlling data from equipment and equipment, and data from the programmable controller is transmitted via the PHS communication unit via ISDN. A PHS communication unit for a programmable controller that performs data communication between the programmable controller and a computer network.
(2) A data communication method for performing data communication between a programmable controller and a computer network using the PHS communication unit for a programmable controller according to the above (1).

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 shows a diagram in which a network connecting a production facility or a storage facility and a host computer controlling those facilities is connected by a PHS line. That is, data from the equipment / device is wirelessly communicated from the programmable controller to the base station via the PHS communication unit. Data is transmitted from the base station to the computer or the programmable controller on the wired network via the ISDN, the PIAFS-compatible TA, and the router. Instruction data from a computer or a programmable controller on the network is transmitted from the PHS communication unit to the programmable controller in a flow opposite to that described above, and transmitted to devices and equipment.

There are the following methods for connecting the programmable controller and the PHS communication unit, and any of them can be used. (1) How to connect to the RS232C interface of the programmable controller (2) How to connect to the PC card interface of the programmable controller (3) How to connect directly to the bus of the programmable controller

[0007]

According to the present invention, the use of the PHS communication unit enables wireless data communication from the programmable controller. For this reason, troublesome wiring work between the network and the programmable control becomes unnecessary, and mutual data communication becomes possible even when the equipment / apparatus is located at a distant place outdoors or moving at low speed.

[Brief description of the drawings]

FIG. 1 illustrates that data communication between a remote network and a programmable controller is possible using a PHS communication unit using the present invention.

Claims (2)

[Claims] A PHS communication unit and a programmable controller for processing and controlling data from equipment and devices.
A PHS communication unit for a programmable controller, which performs data communication between a programmable controller and a computer network via an ISDN via an S communication unit. 2. A data communication method for performing data communication between a programmable controller and a computer network using the PHS communication unit for a programmable controller according to claim 1.