Station between communication conservation mode null inside decentralized control system

摘要

PURPOSE:To improve the degree of freedom and reliability in operation by protecting the inter-station communication specified in a decentralized control system connected with a control computer, etc., through a communication means from the communication intervention form another station side. CONSTITUTION:When the number of an operating station So to be communicated at the time of testing is set by means of a setter 4 and stored in a setting storing means 3 on the side of a control station Sc to be tested, a communication station for test, adjustment, etc., can be specified and, in this case, the setting can be performed while the stored content is confirmed by utilizing the display function of the setter 4. Even if the number of the station where communication is inhibited or the number of the station where communication is permitted is set, the setting can be performed. Moreover, the setting can also be performed by means of communication through a transmission line L while the set content is displayed from the side of the operating station So provided with a display 5.