| 摘要 |
PURPOSE:To ensure the display for only the necessary information by providing such deciding function that starts the recording automatically when the plant features the prespecified state and then stops the recording automatically when the plant gets out of the prespecified state respectively. CONSTITUTION:State input signal P sent from the plant is supplied to input control part 1 to be converted into signal A which is handled through the computer. Signal A is supplied to display item decision part 4, where a decision is given whether signal A satisfies the conditions based on the conditions which are previously set at display item conditions register part 5 via display condition decoding part 41. And when the conditions are satisfied, signal A is supplied to the display conditions satisfying memory part in the form of signal B for memorization of the conditions. Signal C is applied to display item memory process part 43 via memory part 42 to give a decision to the display priority. In case the item to be displayed exists at part 43, signal D is applied to display request part 2. After receiving signal D, part 2 calls out the items to be displayed from display item register part 6 to deliver them to display part 3. While in case signal A does not satisfy the decision conditions, the display is cancelled automatically. |
