DL205 Analog Manual, 7th Edition Rev. D
10-4
Chapter 10: F2-08DA-1, 8-Channel Analog Current Output
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)
It is important to examine the configuration if a DL230 CPU is being used. As can be seen
in the section on Writing the Control Program, V-memory locations are used to capture
the analog data. If the module is placed in a slot so that the output points do not start on a
V-memory boundary, the program instructions aren’t able to 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 the multiplexing method, the first output address
assigned to the module must be one of the following Y locations. The table also shows the
V-memory addresses that correspond to these Y locations.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
b
C
D
X
Y0 Y20 Y40 Y60 Y100 Y120 Y140 Y160
V
V40500 V40501 V40502 V40503 V40504 V40505 V40506 V40507
Y
3
7
16pt
Input
8pt
Input
16pt
Output Output
8pt16pt
Output
X0
--
X17
X20
--
X27
Y0
--
Y17
Y20
--
Y37
Y40
--
Y47
Slot 0Slot 1Slot2 Slot 3Slot 4
Y
2
7
Y
3
0
Data is correctly entered so output
points start on a V-memory boundary
address from the table below.
16pt
Input
8pt
Input
8pt
Output Output
16pt16pt
Output
X0
--
X17
X20
--
X27
Y0
--
Y17
Y20
--
Y27
Y30
--
Y47
F2-08DA-1
V40502
BSLBSM
Y
4
0
Y
5
7
Y
4
7
Y
5
0
V40501
BSLBSM
Y
2
0
Y
3
7
Y
2
7
Y
3
0
Slot 0Slot 1Slot2 Slot 3Slot 4
Data is split over two locations, so instructions cannot access data
from a DL230 (or when the module is placed in a remote base).