Rockwell Automation 1794-XXXX FLEX I/O High-Density Analog Modules - Manual (Page 58)

Publication 1794-UM062A-EN-P - September 2012
50 Data Tables
Read word 12 Bits 00…11
(00…13) Out of range bits (R) for individual channels – Bit 00
corresponds to input channel 0, bit 01 corresponds to
input channel 1, and so on. When set (1), indicates out
of range. For more details on out of range, see
Table Range Selection Bits – 1794-IE12 Analog Input
Module on page 48
.
Bit 12 (14) Not used – set to 0.
Bit 13 (15) General Fault – Bit set to 1 if a fault has occurred
including: RAM test failure, ROM test failure,
reserved bits asserted (bits 12…0 of the Reserved
word and 15…12 of the Config word) and
EEPROM failure.
Bit 14 (16) Field Power Off – Bit is set to 1 if the field power
is off. This is not an indication of field power that is
out of tolerance.
Bit 15 (17) Power Up bit – This bit is set to 1 when all bits in the
configuration register (write word 1) are 0
(unconfigured state).
Write word 0 Bits 00…14
(00…16) Reserved – set to 0.
Bit 15 (17) Module Enable bit – Set the bit to 1 to enable the
module. This will turn the OK LED solid green.
Write word 1 Bits 00…11
(00…13) Configuration – Set the 2 bit pattern that configures
a pair of channels for Off, 0…20 mA, 4…20 mA, and
±10V. For more information, see
Table Range
Selection Bits – 1794-IE12 Analog Input Module on
page 48
.
Bits 12…14
(14…16) Set to 0.
Bit 15 (17) Quick Step bit – Set to 1 to allow input filter to be
reduced during rapid signal changes. Ince the signal
change is within 1% of FS (that is, 327 counts),
filtering is returned to normal.
Word/Bit Descriptions – 1794-IE12 Analog Input Module
Word Decimal Bit
(Octal Bit) Definition