Rockwell Automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User Manual User Manual
Page 37
2–17
How Communication Takes Place and I/O Image Table Mapping
Publication 1794ĆUM057B-EN-P - November 2001
1794ĆOE4 Series B - 4 Output Analog Module Image Table
Mapping
Module Image
I/O Image
Not used
Diagnostics
Input Size
Output Size
0 or 1 Word
1 or 14 Words
Read
Write
PU
Analog Data Channel 0
Analog Data Channel 1
Analog Data Channel 2
Analog Data Channel 3
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Config. Select
Full Range
MC
Safe State Value - Channel 0
Safe State Value - Channel 1
Safe State Value - Channel 2
Safe State Value - Channel 3
1794ĆOE4 Memory Map
Dec. Bit
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
Size
Octal Bit
17
16
15
14
13
12
11
10
07
06
05
04
03
02
01
00 Read/Write Words
PU
Not used - set to zero
W3 W2 W1 W0
Read Word 1
S
Analog Data - Channel 0
Write Word 1
S
Analog Data - Channel 1
Word 2
S
Analog Data - Channel 2
Word 3
S
Analog Data - Channel 3
Word 4
0
Not used - set to 0
M3 M2 M1 M0
Word 5
0
Not used - set to 0 C3
C2
C1
C0
Not used - set to 0
F3
F2
F1
F0
Word 6
Not used - set to 0
Word 7 thru 10
S
Safe State Value - Channel 0
Word 11
S
Safe State Value - Channel 1
Word 12
S
Safe State Value - Channel 2
Word 13
S
Safe State Value - Channel 3
Word 14
Where:
PU = Power up bit - included in series B modules only.
W = Diagnostic bits for current output wire broken or load resistance high. (Not used on voltage outputs.)
S = Sign bit (in 2's complement)
M = Multiplex control
C = Configure select bit
F = Full range bit