Rockwell Automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User Manual User Manual
Page 33

2–13
How Communication Takes Place and I/O Image Table Mapping
Publication 1794ĆUM057B-EN-P - November 2001
1794ĆOA8 - 8Ćpoint Discrete Output Module Image Table Mapping
Module Image
Outputs
I/O Image
Not used
Not used
Not used
Input Size
Output Size
0 or 1 Word
1 or 2 Words
Read
Write
1794ĆOA8 Memory Map
Decimal 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
Read Words
Not used
Read Word 1
Not used
O7
O6
O5
O4
O3
O2
O1
O0
WriteWord 1
Not used
WriteWord 2
Where O = Output value (where O0 corresponds to output 0, O1 corresponds to output 1, etc.)
1794ĆOW8 - 8Ćpoint Discrete Relay Output Module Image Table
Mapping
Module Image
Outputs
I/O Image
Not used
Not used
Not used
Input Size
Output Size
0 or 1 Word
1 or 2 Words
Read
Write
1794ĆOW8 Memory Map
Decimal 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
Read Words
Not used
Read Word 1
Not used
O7
O6
O5
O4
O3
O2
O1
O0
WriteWord 1
Not used
WriteWord 2
Where O = Output value: where O0 corresponds to output 0, O1 corresponds to output 1, etc., and when bit = 0, the output is off; when bit = 1, the output is on.