IS200TRTDH1C
IS200TRTDH1C
IS200TRTDH1C
volume is less than the relay control panel; Data can be directly sent to the management computer; The cost can compete with the relay control panel; ⑦ input can be mains; The output can be mains,
capacity requirements above 2A, can directly drive the contactor, etc.; ⑨ The original system changes the least when scaling; ⑩ User memory greater than 4KB. In fact, these conditions put forward the idea of combining the advantages of simple, easy to use and low price of relay control with the advantages of perfect function, flexibility and universality of computer, and transforming the hard-wired logic of relay contacter control into the software logic programming of computer. In 1969, the United States Digital Equipment Company (DEC company) developed the first programmable controller PDP-14, in the United States General Motors Company on the production line trial success, and achieved satisfactory
results, programmable controller was born. Since the advent of programmable controller, the development of extremely rapid. In 1971, programmable controller production began in Japan. Production of programmable controllers began in Europe in 1973. Until now, some of the world’s famous
