NI SCXI-1124 Current module USES tutorial

NI SCXI-1124 Current module USES tutorial

Operating errors within the system are indicated on the LCD message display as an error code. The error codes used and their meaning are listed in the following sections. These sections also contain appropriate information pertaining to the likely cause of the error message being displayed and an indication on how the error affects the operation of the channel card. Error Code: This relates to the error code message ERxx displayed on the LCD message display. If more than one error is present simultaneously, the error with the highest code number is displayed. Card Status: This refers to the condition of the control card operation. Active means that the card is still processing signals from the connected sensor and, in the event of the sensor detecting gas, will still activate any configured alarm outputs.Non active means that it is not possible for the control card to generate any alarms in response to the sensor detecting gas.

Fault Signal:

 This refers to the indication of the fault condition in response to the error condition. Yes means that the appropriate channel front panel fault LED and any configured fault relay will be operated. No means that no fault indication is given. The error condition that causes these general warning messages is of a minor nature and the channel card will continue to operate. The condition should however still be investigated. Latch: This refers to the condition of the error message and the associated fault signal. Yes means that the control card will continue to display the error message until the condition causing the error has cleared and the reset push-button has been operated. No means that the error message will clear automatically once the condition causing the error message has cleared.

means that the latch/non-latch condition is configurable using the Engineering Interface Software.RAM stores the working values during operation. The RAM failure message is displayed if there are errors in the read/write byte test during the system start-up or periodic self test. This is a serious card failure and, as such, the card needs to be replaced.The ROM stores the channel card program. The ROM failure message is displayed if there are errors in the read byte test during the system start-up or periodic self test. This is a serious card failure and, as such, the card needs to be replaced.

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