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7430451 |
Safety unit, controller system, connection method of controllers, control method of the controller system and monitor method of the controller system
Safety units 1 d to 1 f for executing a safety function processing are connected to a non-safety controller constituted by connectting a plurality of units 1 b, 1 c including CPU units 1 a...
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7369902 |
Slave units and network system as well as slave unit processing method and device information collecting method
A network system is constructed by connecting a safety PLC constituting a master unit and safety slaves 2 to each other through a safety network 3 . The safety slaves each have a device...
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7269465 |
Control system for controlling safety-critical processes
There is provided a control system for controlling safety-critical processes that includes a fieldbus, a bus master for controlling a communication via the fieldbus, at least one signal unit for...
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7162311 |
Safety network system, safety slaves unit, safety controller and communication method and information collecting method and monitoring method for the safety network system
A safety PLC 1 and at least a safety slave unit 2 are connected through a safety network 3 . The safety slave unit has the safety information transmission function for transmitting the safety...
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7065391 |
Communication system, communication apparatus, and communication control method
A slave can take any of a start state in which the slave can communicate with a master, a communication control state in which at least the slave can receive a start request signal transmitted by...
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7050860 |
Safety network system, safety slave, and communication method
The safe PLC 1 and the safe slaves 2 are connected with each other via the safe network 3 . The safe PLC has the function of transmitting a request of safety information by broadcast message to...
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