Omron Corporation

Denso Corporation

Hajime Izutani

Shintaro Ueno

Hiroshi Shimizu

Hiroshi Hashimoto

Tsuyoshi Matsumoto

Masaru Imoto

Naoya Ochi

Hirofumi Iwanaga

Fumiharu Shimohara

Masanori Yamashita

Fumihiko Okumura

Tomoaki Yoshikawa

Toshiyuki Shigehisa

A valve control system includes general-purpose valves arranged in a pipe that allows the flow of fluid, first and second sensors, and a safety controller. The general-purpose valves are valves that can be opened and closed according to electric signals, and may be, e.g., solenoid valves, respectively. The first and second sensors are sensors that detect a state of fluid flowing from the corresponding valves, and are formed of, e.g., pressure switches, respectively. The safety controller may satisfy safety standards, and outputs signals for controlling the valves based on signals provided from the first and second sensors, respectively.

Valve control system and valve control method

A programmable controller system includes a programmable controller apparatus, a remote input and output apparatus connected to the programmable controller apparatus via a field bus and a monitoring apparatus configured to be located on a communication path between the programmable controller apparatus and the remote input and output apparatus and to monitor a communication data therebetween. The monitoring apparatus includes a rewritable tag for prescribing a condition for issuing a transmission request command with respect to an external equipment deterioration diagnosis and a command issuing part issues a transmission request command required for the external equipment deterioration diagnosis with reference to the tag. A preferable data logging operation is carried out properly without any PLC operation.

Programmable controller system

A terminal table unit is associated with an output apparatus such as valves and solenoids and an input apparatus such as switches and includes not only a main body with a control device and a memory device but also a cassette with a memory medium that is detachably attached to the main body. The control device receives input data from the input apparatus for controlling the output apparatus and drives the output apparatus according to the received input data. The received input data are temporarily stored in the memory device in specified units. When the input data are found to include abnormal data, the control device causes data stored in the memory device to be transferred to the memory medium of the cassette such that the memory cassette can be removed and the abnormal data stored on the memory medium can be analyzed elsewhere.

Terminal table unit

Providing a slave that can precisely measure operating time of an output device that is service information, without having effects on a control system. To Mix slaveconnected to a field network, an actuatorand sensorthat detects completion of operation of the actuator are connected. Having a built-in timer, the Mix slave measures time from when OUT terminal to which the actuator is connected turns ON until IN terminal to which the sensor is connected turns ON, by using the timer. Time thus obtained will be operating time of the output device. Comparison of this operating time with a setting will determine whether or not the actuator normally operates.

Slave unit, node unit, controllers and network system

Growing community of inventors

Mishima, Japan

Hajime Izutani