Hardware reference guide

I/O Modules
35013379 02 October 2007 521
The following figure shows Register 9.
*A range warning is issued when a channel input is outside the rated input value, as
shown in the following table. Warning bits stay on after out of range bits are set. An
out-of-range bit is set when a channel input exceeds the rated input value by 2.4%.
Out of range bits are also set if inputs drop below 0.5 V (1 ... 5 V mode) or 2.08 mA
(4 ... 20 mA mode).
When configured for current inputs (jumper installed between INPUT(+) and
ISENSE terminals), a broken field wire results in a zero current reading. If 4 ... 20
mA is selected, fault LEDs and warning/out of range and I/O Map Status Byte bits
are displayed
Input status wordRegister 9
1 = Channel 5 out of range
1 = Channel 6 out of range
1 = Channel 7 out of range
1 = Channel 8 out of range
1234567 10 11 12 13 14 15 1689
1 = Range warning on channel 8*
1 = Range warning on channel 7*
1 = Range warning on channel 6*
1 = Range warning on channel 5*
1 = Channel 1 out of range
1 = Channel 2 out of range
1 = Channel 3 out of range
1 = Channel 4 out of range
1 = Range warning on channel 4*
1 = Range warning on channel 3*
1 = Range warning on channel 2*
1 = Range warning on channel 1*
Possible Equipment Failure
When configured for voltage inputs (no jumper installed between INPUT(+) and
ISENSE terminals), if a broken field wire occurs, readings will be non-zero and not
predictable.
Failure to follow these instructions can result in injury or equipment damage.
CAUTION
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com