AutomationDirect DL205, Руководство пользователя

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DL205 Analog Manual, 7th Edition Rev. D
12-9
Chapter 12: F2-02DAS-1, 4-20mA 2-Channel Analog Current Output
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
B
C
D
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
b
C
D
Understanding the Output Assignments
Remember that the F2-02DAS-1 module appears to the CPU as a 32-point discrete output
module. These points provide the data value and an indication of which channel to update.
Note, if either a DL240, DL250 or DL260 CPU is being used, these bits may never have to
be used, but it may be an aid to help understand the data format.
Since all output points are automatically mapped into V-memory, the location of the data
word that will be assigned to the module can simply be determined.
The individual bits in this data word location, represents specific information about the analog
signal.
Channel Select Outputs
Two of the outputs select the active channel.
Remember, the V-memory bits are mapped
directly to discrete outputs. Turning a bit OFF
selects a channel. By controlling these outputs, the
channel to be updated is selected.
Y41 Y40 Channel
On
Off 1
Off On 2
Off Off 1 & 2 (same data
to both channels)
On On None (both channels
hold current values)
Y
2
0
Y
3
7
F2-02DAS--1
V40501
B S L B S M
V40500 V40503
16pt
Input
8pt
Input
32pt
Output Output
8pt
16pt
Output
X0
--
X17
X20
--
X27
Y0
--
Y17
Y20
--
Y57
Y60
--
Y67
Slot 0 Slot 1 Slot 2 Slot 3 Slot 4
Y
4
0
V40502
B S L B S M
Y
5
7
= channel select outputs
V40502
B S L B S M
Y
4
0
Y
4
1
Y
5
7