Spectrum Controls 1769sc-IT6I - Manual (Page 45)

Chapter 4: Module, Data, Status, and Channel Configuration 4-11
User’s Manual Pub. 0300244-01 Rev. A
4.4.3 Open-Circuit Flag Bits (OC0 to OC7)
Bits OC0 through OC5 of word 6 contain open-circuit error information for channels 0
through 5, respectively. Errors for the CJC sensors are indicated in OC6 and OC7. The
bit is set (1) when an open-circuit condition exists. See Open-Circuit Detection on page
5-3 for more information on open-circuit operation.
4.4.4 Over-Range Flag Bits (O0 to O7)
Over-range bits for channels 0 through 5 and the CJC sensors are contained in word 7,
even-numbered bits. They apply to all input types. When set (1), the over-range flag bit
indicates an input signal that is at the maximum of its normal operating range for the
represented channel or sensor. The module automatically resets (0) the bit when the data
value falls below the maximum for that range.
4.4.5 Under Range Flag Bits (U0 to U7)
Under-range bits for channels 0 through 5 and the CJC sensors are contained in word 7,
odd-numbered bits. They apply to all input types. When set (1), the under-range flag bit
indicates an input signal that is at the minimum of its normal operating range for the
represented channel or sensor. The module automatically resets (0) the bit when the
under-range condition is cleared and the data value is within the normal operating range.