Maintenance Mode

2.2 Di check

Displays the status of digital input. In the maintenance main menu of Fig. 1.3.1, select "Di Check," and press the < > key to display the Di check screen shown in Fig. 2.2.1.

Pressing the < > key (previous page) or the < > key (next page) changes the pages. To go back to the maintenance main menu, press the < > key.

<Description of display contents>

Port State

Di1 to Di28: Input to AML Close: Contact ON Ds11 to Ds18: Input to serial port 1 Open: Contact OFF Ds21 to Ds28: Input to serial port 2

Reading method of Di signal (State)

Di signal “State” shows “Open” and “Close” of the each switch contact. However, Main and Aux. winch two-blocking detection switch (circuit) contacted with the series circuit. Therefore when either switch detects the overwound and the switch contact becomes “Open”, then, both contacts become “Open”. In a word, State of Di5 changes two signals at the same time. These functions are not provided in other Ai and Pi, etc.