| 摘要 |
PROBLEM TO BE SOLVED: To provide an input/output device for a programmable controller capable of reducing futile power consumption in a state display equipment of a control equipment to be controlled. SOLUTION: This input/output device is provided with a state display equipment DP displaying the state of the control equipment to be controlled, a drive circuit IL outputting a signal for driving the state display equipment DP and executing turning-on and gate signal for inhibiting or permitting the output of the drive circuit IL and a latch circuit IH deciding the state of the gate signal and updating an output value by the command of the programmable controller, Then, the inhibition and permission of state display are controlled by the output state of the latch circuit IH. |
