2–7
How Communication Takes Place and I/O Image Table Mapping
Publication 17946.5.5 - October 1996
8point Discrete Electronically Fused Output Module
(1794OB8EP) Image Table Mapping
Module Image
Outputs
Input Size
Output Size
0 or 1 Word
1 or 2 Words
I/O Image
Reserved
Read
Write
Fault Bits
Not used
Reserved
FR
Memory Map of 8-Point Discrete Electronically Fused Output
Module Image Table – 1794-OB8EP
Dec. Bit
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
Size
Oct. Bit
17
16
15
14
13
12
11
10
07
06
05
04
03
02
01
00
Size
F7
F6
F5
F4
F3
F2
F1
F0
Reserved
Read Word 1
Not used
FR
O7
O6
O5
O4
O3
O2
O1
O0
Write Word 1
Reserved
Write Word 2
Where O = Output value (O0 corresponds to output 0, O1 corresponds to output 1, etc.)
F
V
= overload fault bit (1 = fault present; 0 = no fault). F0 corresponds to output 0, F1 corresponds to output 1, and so on.
FR = fault reset bit (1 = reset word; 0 = no change)