Yokogawa Data Acquisition with PID Control CX2000 User Manual

Page 79

1-67

IM 04L31A01-01E

Explanation of Functions

Alarm ON

When set to non-hold

When set to hold

Alarm OFF

Relay output ON

Relay output OFF

Alarm ACK

Alarm ON

Alarm OFF

Relay output ON

Relay output OFF

Relay output ON/OFF is for the case when

NO (Normally Opened) terminal is used.
If a NC (Normally Closed) terminal is used,
the ON/OFF condition is reversed from the
condition shown in the left figure.

Note

When the reflash alarm is turned ON, I01 to I03 are set to non-hold. Specifying [Hold]

produces no effect.

Hold/Non-hold of Alarm Indications

You can select the following behavior when the alarm switches from the activated
condition to the released condition.
• Clear the alarm indication with the release of the alarm (non-hold).
• Hold the alarm indication until the alarm ACK operation is performed (hold).
The initial setting is [Non-hold].
Alarm Icon Indication Example

Release

When indication is set to non-hold

Alarm

Occurrence

Red icon

Indication

None

When indication is set to hold

Occurrence

Release

None

Blinking
red icon

Blinking
green icon

Alarm ACK

Blinking
red icon

Alarm ACK

Alarm
icon

Note

The non-hold/hold setting of the alarm indication also applies to control alarms.

Showing/Hiding the Alarm Display (Style Number S3 or Later)

You can select whether or not to display alarms when they occur. When not displaying
alarms, the alarm is output but not retained in the alarm summary.

1.15 Measurement Function > Measurement Alarm Related Settings