Spectrum-controls 1746sc-NI8u Manuel d'utilisateur télécharger pdf (Page 78)

66 SLC 500

™

Universal Analog Input Module

Channel Error (Bit 15)

The module sets this fault bit when it detects any of the following:

Configuration erorrs:

- configuration bits Data Format definition, invalid Input Types for

channels 0 through 3: 10010 - 11101

- configuration bits Data Format definition of Engineering Units x 1 for

Input Types of ±500mV, 0-5V, 1-5V, 0-10V, ±10V, 0-20mA

- configuration bits where Open Circuit is enabled with Input types of 0-

5V, 1-5V, 0-10V, ±10V, or 0-20mA

- invalid data acquisition of an input channel

- the filter frequency selected for the valid channel currently fails

autocalibration range checks

Module Status LED (Green)

The module-status LED indicates when the module detects a

nonrecoverable fault at power up or during operation. For this type of

fault, the module:

• no longer communicates with the SLC processor

• disables all channels

• clears all data and status words

A module failure is non-recoverable and requires the assistance of your

local distributor or Spectrum Controls.

Interpreting I/O Error

Codes

I/O error codes appear in word S:6 of the SLC processor status file. The

first two digits of the error code identify the slot (in hexadecimal) with the

error. The last two digits identify the I/O error code (in hexadecimal).

The error codes that apply to your module include (in hexadecimal):

• 50–5E

• 71 (watchdog error)

• 90–94

For a description of the error codes, refer to the Allen-Bradley Advanced

Programming Software (APS) Reference Manual, Allen-Bradley

publication 1746-6.11.

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Spectrum-controls 1746sc-NI8u Manuel d'utilisateur Page 78