Rockwell Automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User Manual - Manual (Page 53)

2–33 How Communication Takes Place and I/O Image Table Mapping
Publication 1794ĆUM057B-EN-P - November 2001
Description
Dec. Bits
(Octal Bits)
Word
Write Word 1 00-02 Input Filter Cutoff bits
Bit 02 01 00 Filter Time Constants - actual filtering depends on the module's
mode of operation
0 0 0 Hardware filtering only (default filtering)
0 0 1 25ms
0 1 0 100ms
0 1 1 250ms
1 0 0 500ms
1 0 1 1s
1 1 0 2s
1 1 1 5s
Bits 03-05 Reference Junction - used when input type is set to thermocouple and sensor mode
is set to internal compensation. Sets a fixed reference junction to compensate all
thermocouple channels.
Bit 05 04 03 Reference Junction
0 0 0 0 o C
0 0 1 20 o C
0 1 0 25 o C
0 1 1 30 o C
1 0 0 40 o C
1 0 1 50 o C
1 1 0 60 o C
1 1 1 70 o C
Write Word 1
Contimued
Bits 06-07 Fault Mode bits - when a bit is set (1), fault mode is enabled for that channel. Bit 06
corresponds to channels 0-3; bit 07 corresponds to channels 4-7.
0 = disabled
1 = enable wireĆoff detection
Bits 08-11
(10-13)
Data format - module defaults to -4000 to 10000 in millivolt mode, and 0 to 5000 in
ohms mode with implied decimal points (i.e. -40.00, 0.0 Ω )
Bit 11 10 09 08 Data type for channels 0-7
0 0 0 0 o C (implied decimal point XXXX.X)
0 0 0 1 o F (implied decimal point XXXX.X)
0 0 1 0 o K (implied decimal point XXXX.X)
0 0 1 1 -32767 to +32767
0 1 0 0 0 to 65535
0101 through 1111 not used
Bits 12-15
(14-17)
Not used