DL205 Analog Manual, 7th Edition Rev. D
8-8
Chapter 8: F2-02DA-1, F2-02DA-1L, 2-Channel Analog Current Output
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Channel Scanning Sequence for DL240, DL250-1, and DL260 CPUs
(Pointer Method)
If either a DL240, DL250-1 or DL260 CPU is used, both channels can be updated on every
scan. This is because the all three CPUs support special V-memory locations that are used to
manage the data transfer. This is discussed in more detail in the next section on
Writing the
Control Program
.
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Channel 1, 2
Channel 1, 2
Channel 1, 2
Channel 1, 2
Channel 1, 2
Scan N
Calculate the data
Write data
Read inputs
Execute Application Program
Scan N+1
Scan N+2
Scan N+3
Scan N+4
Scan
Write to outputs
System With
DL240/250--1/260
CPU
Содержание DL205
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