Rockwell Automation 1746-BTM Barrel Temperature Control Module User Manual User Manual
Page 60
Publication 1746-UM010B-EN-P - April 2001
6-2 Monitoring Status Data
Values reported in words 12-15 for loops 1–4 vary, depending on the
bit code set in global commands N10:192/bits 08-10 and reported in
input image word N10:168/bits 08-10. You must interpret the reported
value according to the implied decimal point:
Table 6.C Global Status from All Loops
Remember that the module returns the control variable (CV) of each
loop to the input image table as both a numeric value (current CV)
and a time–proportioned output (TPO). For additional information,
Refer to BTM201.rss Data Table Layout on page 9-2 and
BTM50220.RSS Data table layout on page 9-7.
Table 6.B Interpret Implied Decimal Points
If N10:168/10-09-08
Reports:
Implied decimal point is:
Interpret
:
As:
0 0 1
0 1 0
1 0 1
current setpoint,
current error, or
cold–junction
temperature
1 decimal place
(from the right)
4999
499.9
0 1 1
current CV (analog
output)
2 decimal places
4999
49.99
1 0 0
1 1 0
error code, or
firmware revision number
none
4999
4999
Word
Bit
Define
Indicated By
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
8
upper
byte
8-10
Selection of Reported
values
See Important Below
Current setpoint
0
0
1
Current Error value
0
1
0
Current CV (loop output)
0
1
1
Current error code
1
0
0
Cold junction temperature
1
0
1
Firmware revision number
1
1
0
11
Autotune progress
0 = None; 1 = In progress
12
Cold junction low
0 = None; 1 = Alarm
13
Cold junction high
0 = None; 1 = Alarm
14
Reserved
15
Advanced rotator
values
0 = Normal Values
1 = Advanced Diagnostic Values
9
upper
byte
8-11
Reserved
12
M0 download
0 = None; 1 = Download
13
M1 download
0 = None; 1 = Download
14
M0 upload
0 = No; 1 = Upload
15
M1 upload
0 = No; 1 = Upload
IMPORTANT
The sample program returns all six variables. For
their data table locations, Refer to BTM201.rss Data
Table Layout on page 9-2 and BTM50220.RSS Data
table layout on page 9-7.