AutomationDirect DL205, Руководство пользователя

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DL205 Analog Manual, 7th Edition Rev. D 15-10
Chapter 15: F2-8AD4DA-1, 8-Ch. In / 4-Ch. Out Analog Current Combination
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Output Channel Update Sequence (Pointer Method)
If the F2-8AD4DA-1 is installed in a local (CPU) base, all four output channels can be updated
on every scan. However, only one channel can be updated per scan if the module is installed in
an expansion, remote I/O, or Profibus slave base. The timing is synchronized with the timing
of reading the input channels, so each output channel can be updated every eight scans.
Calculate the data
Write data
Read inputs
Execute Application Program
Scan
Write to outputs
Ch 1, 2, 3, 4
Scan N
Scan N+1
Scan N+2
Scan N+3
Ch 1, 2, 3, 4
Ch 1, 2, 3, 4
Ch 1, 2, 3, 4
Scan N+4 Ch 1, 2, 3, 4
System with
analog module
installed in local
(CPU) base.
Scan N
Read the data
Store data
Read Inputs
Execute Application Program
Scan N+1
Scan N+2
Scan N+6
Scan
Write to Outputs
Scan N+7
Ch 1
Ch 2
Ch 3
Ch 4
Scan N+3
System with analog
module installed in
expansion, remote I/O
or Profibus slave base.
Scan N+8
Ch 1