DL205 Analog Manual, 7th Edition Rev. D
4-4
Chapter 4: F2-08AD-1, 8-Channel Analog Current Input
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
B
C
D
Special Placement Requirements (DL230 and Remote I/O Bases)
Even though the module can be placed in any slot, it is important to examine the configuration
if a DL230 CPU is used, as can be seen in the section about Writing the Program located in
this chapter. V-memory locations are used to extract the analog data. If the module is placed so
the input points do not start on a V-memory boundary, the instructions cannot access the data.
This also applies when placing this module in a remote base using a D2-RSSS in the CPU slot.
To use the V-memory references required for a DL230 CPU, the first input address assigned
to the module must be one of the following X locations. The table also shows the V-memory
addresses that correspond to these X locations.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
b
C
D
Slot 0 Slot 1 Slot 2 Slot 3 Slot 4
8pt
Input
8pt
Input
16pt
Input
16pt
Input
16pt
Output
X0
-
X7
X10
-
X17
X20
-
X37
X40
-
X57
Y0
-
Y17
V40401
V40402
V40400
F2-08AD-1
MSB
LSB
X
3
7
X
2
0
Correct
Data is correctly entered so input
points start on a V-memory boundary.
Slot 0 Slot 1 Slot 2 Slot 3 Slot 4
8pt
Input
8pt
Input
16pt
Input
16pt
Input
16pt
Output
X0
-
X7
X10
-
X27
X30
-
X47
X50
-
X67
Y0
-
Y17
V40401
V40400
F2-08AD-1
MSB
LSB
X
3
7
X
2
0
MSB
LSB
X
1
7
X
0
X
3
0
X
2
7
X
1
0
X
7
Incorrect
Data is split over two locations, so instructions cannot access data from a DL230.
X
X0 X20 X40 X60 X100 X120 X140 X160
V
V40400 V40401 V40402 V40403 V40404 V40405 V40406 V40407
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