Yokogawa DR240 - Manual (Page 157)

9-15 IM DR232-01E
9
Event/Action Function and Other Functions
Any of the following functions are executed by pressing the ENTER key. After that, the recorder
returns to the operation mode.
Alarm acknowledgment (ALARM ACK)
• When the alarm display hold (ALARM HOLD), on page 10-8 is set to ON, the alarm
acknowledgment menu appears.
• For the alarm display hold functions, see Section 2.4, “Alarm Function,” on page 2-15.
Alarm reset (ALARM RST)
• When the relay hold function (on page 10-11) is set to ON, the alarm reset menu appears.
• For the alarm reset functions, see Section 2.4, “Alarm Function,” on page 2-15.
Timer reset (TIMER RESET)
• For the timer reset functions, see Section 2.3, “Recording Functions,” on page 2-8.
Computation start (MATH START)
• Starts computation. For details, refer to Chapter 12, “Executing Computation”.
Computation clear start (MATH CLR START)
• Clears computation results then re-starts computation.
Computation stop (MATH STOP)
• Stops computation.
Clearing Incomplete Measurement Status (MATH ACK)
• Clears the status indication displayed due to incomplete measurement which occurred during
computation.
Keylock function (KEY LOCK ON)
• For the keylock functions, see Section 2.6, “Other Functions,” on page 2-17.
• The KEY LOCK ON is displayed after selecting the keylock (see page 10-16).
• Enter a password (A CODE NUMBER) and then press the ENTER key to actuate the keylock
functions. The KEY LOCK OFF menu then appears.
• Enter the FUNC menu, select KEY LOCK OFF and then enter a password (A CODE
NUMBER). Press the ENTER key to release the keylock functions. The menu returns to KEY
LOCK ON.
• To set a password, see page 10-16.
• When the keylock functions are actuated, the “KEYLOCK” lights up.
Message printout (MSG PRINT)
• Prints out messages. For details, see Section 7.3, “Starting Message Printing,” on page 7-3.
• Select a message from the corresponding code 01 to 20.
9.3 Alarm Acknowledgment, Alarm Reset, Timer Reset, Keylock, and Message Printout