| 摘要 |
<p>PURPOSE: To provide the display device for state monitoring at a low cost by reducing the attachment operation of tools, wiring of cables and outside dimensions of a monitoring panel or the like. CONSTITUTION: This device is provided with a programmable controller 24 for incorporating a first storage means 25 where contact point signals for indicating a monitoring state are converted to bit information data and stored and parallelly sending out the bit information data by every prescribed bit number along with clock signal, an extension unit base 28 for inputting the bit information data, sending them out again, counting the clock signals and generating and sending out plural set signals corresponding to the counted value, plural extension units 30 and 30A for respectively incorporating a second storage means for storing the bit information data from the extension unit base 28 based on the set signals and respectively parallelly sending out the bit information data and plural light emitting diodes 32 and 32A for being operated based on the bit information data from the extension units 30 and 30A.</p> |
