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Horner APG XL7 OCS User Manual

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XL7 User Manual

The current state of the displayed alarm is indicated by its color and optionally by an abbreviated

indicator after the date/time stamp (ALM, ACK, RTN). The operator can acknowledge an alarm by

selecting it from the list and touching the ACK button. The operator can also clear an alarm if that

function is enabled in the alarm object. If not enabled, the Clear buttons are grayed and do not respond

to touch. Once view operations are complete, simply touch the Esc button to remove the pop-up alarm

viewer.

Note that OCS registers %SR181 and %SR182 are available for ladder use, which indicate presence of

unacknowledged or acknowledged alarm (respectively). The screen designer may implement these

registers to switch screens or activate the beeper to attract the operator’s attention.

13.9 Removable Media

The removable media object is generally used to inform the operator on the current state of the

removable media device and allow access to its file structure. The removable media object is displayed

as a button that changes colors to indicate the current state of the removable media device. The

following indicates the device states and the default colors associated with these states.

Highest

(Red)

Device Error

(Yellow)

Device Full (threshold adjustable)

Lowest

(Green)

Device OK

Figure 13.7 – Removable Media Object

To view and perform file operations, the operator must access the removable viewer. This is

accomplished by either touching an (enabled) removable media object or through the system menu.

When accessed, the removable media viewer is displayed as pop-up removable media dialog similar to

that shown in Figure 13.8.

Note that the removable media object can be configured to open the removable media viewer at a

certain directory complete with restrictions on transversing back up the file path. This may be used to

restrict operator access to non-critical files.

Figure 13.8 – Removable media viewer

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