Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 111)

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IM 04L31A01-01E
Explanation of Functions
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1.20 Other Functions
USER Key
One of the following actions can be assigned to the USER key. The key is initially
assigned “Alarm ACK.”
Actions That Can Be Assigned
Name of Action Action
Trigger Key trigger used to start acquiring event data to the internal memory (valid only
when event data is specified to be acquired to the internal memory and the
trigger used to start the acquisition is set to key trigger).
Alarm ACK Clears alarm display/relay output (valid only when the operation of the alarm
display or output relay is set to “hold”).
Math Starts/stops computation (only on models with the computation function (/M1)).
Math reset Resets computed data (Resets the computed value to 0. Only when
computation is stopped on models with the computation function option).
Manual sample Acquires instantaneous values of all channels to the internal memory.
Messages 1 to 8 Displays message 1 to 8 on the trend display and stores the message to the
internal memory.
Snapshot Saves the screen image data to the external storage medium.
Key Lock
Key lock is a function used to prohibit key operations, removal of the Zip disk, and saving
of the data to the external storage medium in manual save mode, soft key operations on
the control operation display, and setup operation on the control setting display. You
must enter a password to release the key lock.
Key Lock Item
The characters in the middle column are the characters of the soft key menu that are
displayed on the control operation screen.
Operation during Key Lock
All keys except those shown in the following table are disabled.
Key Lock Item Operation When Key Lock Is Enabled
DISP/ENTER key Switching of operation displays prohibited
External storage medium
• During manual save mode Saving of data when the external storage medium is inserted is
prohibited. Zip disk removal prohibited on models with Zip drives.
• During auto save mode Zip disk removal prohibited on models with Zip drives.
Control menu lock Soft keys that are locked cannot be used on setting mode (control)
menu.