CONTROL SYSTEM AND PROCESSING METHOD THEREOF

摘要

A control system includes a first control device, a second control device, and a transfer storage unit. The first and second control devices execute processes. The first control device includes a first storage unit and a first processor. The first processor reflects state information in the first storage unit and the transfer storage unit. The first processor transmits, to the second control device, a start notification that causes the second control device to start an operation of the second control device. The second control device includes a second storage unit and a second processor. The second processor starts the operation of the second control device in response to reception of the start notification when the second control device is in a suspended state. The second processor reads the state information from the transfer storage unit. The second processor reflects the read state information in the second storage unit.

主权项

1. A control system, comprising:
a first control device and a second control device that are made redundant and configured to execute processes on a target device in a predetermined execution order; and a transfer storage unit accessible from the first control device and the second control device,
wherein the first control device includes:
a first storage unit configured to
store therein information to be used for the execution of the processes, anda first processor configured to
reflect state information in the first storage unit and the transfer storage unit, the state information indicating a state of a process to be executed among the processes, andtransmit, to the second control device, a start notification that causes the second control device to start an operation of the second control device, the second control device includes:
a second storage unit configured to
store therein information to be used for the execution of the processes, anda second processor configured to
start the operation of the second control device in response to reception of the start notification from the first control device when the second control device is in a suspended state in which the operation of the second control device is stopped,read the state information from the transfer storage unit, andreflect the read state information in the second storage unit.