Module configuration chapter 5 – Rockwell Automation 1771-IXHR , D17716.5.80 HIGH RESOL.THERMOCOUPLE User Manual
Page 30
Module Configuration
Chapter 5
5Ć7
Word Description
Bits
Word 1
(cont.)
bits 09-15
Real time sample interval bits determine the sample time for updating
module inputs. You select sample time in 0.025 second intervals using
binary code. (All values between 0.025 and 3.1 seconds in 0.025
second intervals are available.) We tabulated some values for you.
Sample Time
15
14
13
12
11
10
09
0.1
0
0
0
0
1
0
0
0.5
0
0
1
0
1
0
0
0.6
0
0
1
1
0
0
0
0.7
0
0
1
1
1
0
0
0.8
0
1
0
0
0
0
0
0.9
0
1
0
0
1
0
0
1.0
0
1
0
1
0
0
0
1.5
0
1
1
1
1
0
0
2.0
1
0
1
0
0
0
0
2.5
1
1
0
0
1
0
0
3.0
1
1
1
1
0
0
0
Word 2
bits 00-07
Zoom center value for channels 1-4. These values are used when
millivolt inputs have been selected and bit 07 of word 1 has been set
to enable zoom (i.e. 1
µ
V display resolution). Enter a value in 2's
complement binary format ranging from -70mV to +70mV. The
displayed range will then be +30.000mV around the selected value,
displayed in 1
µ
V increments. Refer to Table 5.E
bits 08-15
Zoom center value for channels 5-8. These values are used when
millivolt inputs have been selected. Enter a value in 2's complement
binary format ranging from -70mV to +70mV. The displayed range will
then be +30.000mV around the selected value, displayed in 1
µ
V
increments. Refer to Table 5.E
Word 3
bits 00-07
Filter values for channels 1-4. The filter operates on the display data
only. Alarms, underrange and overrange operate in real time. The filter
constant is equal to: TC = 0.025(1 + filter value). Refer to Table 5.F.
bits 08-15
Filter values for channels 5-8. The filter operates on the display data
only. Alarms, underrange and overrange operate in real time. The filter
constant is equal to: TC = 0.025(1 + filter value). Refer to Table 5.F
Words 4
thru 19
Low and High channel alarm values that you enter via the terminal in
2's complementary binary. Store low and high channel alarms in pairs,
low alarm values in even-numbered words, high alarm values in
odd-numbered words. For example, store channel 1 low and high
alarm values in words 4 and 5, respectively. Alarms are disabled by
setting the low alarm equal to the high alarm. If the zoom feature is
enabled, the alarm values should be the difference between the
"actual alarm limit" and "zoom center value" in word 2. (Refer to the
example PLC-5 program in chapter 5.)