Rockwell Automation 1797-OE8H FLEX Ex HART Analog Modules User Manual - Manual (Page 44)

Publication 1797-6.5.3 - March 2006
2-14 Understand Configurable FLEX Ex Analog Module Features
Bit/Word Description for the Analog Input Module
(1797-IE8H)
Table 2.8 Fault Mode - Write Words 0 and 1
Table 2.9 Add-on Filter Selections - Write Words 0 and 1
Table 2.10 Remote Transmitter Error Up/Down - Write Words 0 and 1
Table 2.7 Configuration Map (Write Words)
Bit
→
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Word
↓
Write
0 Reserved High and Low Error Level 0…3 U/D
0…3
Filter Cutoff 0…3 Data Format 0…3 Flt
Md
0…3
1 Sqrt High and Low Error Level 4…7 U/D
4…7
Filter Cutoff 4…7 Data Format 4…7 Flt
Md
4…7
Where: U/D = up/down
Flt Md = Fault Module
Sqrt = Square Root
Word 0 Bit 00 Fault enable for channels 0…3
Word 1 Bit 00 Fault enable for channels 4…7
Where: 0 = disabled
1 = enable with wire-off and overload or short circuit
Word Bits Description
0 07 06 05 Channels 0…3
1 07 06 05 Channels 4…7
0 0 0 Reserved
0 0 1
0 1 0
0 1 1 10 Hz (100 ms)
1 0 0 4 Hz (250 ms)
1 0 1 2 Hz (500 ms)
1 1 0 1 Hz (1 s)
1 1 1 0.5 Hz (2 s)
Word 0 Bit 08 Up/down channels 0…3
Word 1 Bit 08 Up/down channels 4…7
Where: 0 = remote fault is enabled by transmitter overrange
1 = remote fault is enabled by transmitter underrange