Automation Direct DL405 User Manual page 327

Sending Data to The following two programs show you how to update a single channel. Notice the
One Channel, DL440/DL450 and DL430 CPUs use slightly different programs, although the
DL440/450 DL430 example will also work with DL440 and DL450 CPUs. Since the DL430 does
5 4 4
not support the OUTF instruction, the program must be modified to make sure the
channel select bits are not accidentally changed by the data in the accumulator.
430 440 450
This example assumes you already have the data loaded in V3001.
SP1
Select Channel
Enable Outputs
F4–16DA–1 16-Ch. Analog Current Output
The LD instruction loads the data for channel 1 into
LD the accumulator. Since SP1 is used, this rung
V3001
automatically executes on every scan. You could
also use an X, C, etc. permissive contact.
The BIN instruction converts the accumulator data
BIN
to binary (you must omit this step if you've already
converted the data elsewhere).
The OUTF sends the 12 bits to the data word. Our
OUTF Y20
example starts with Y20, but the actual value depends
K12
on the location of the module in your application.
Y36
Turn Y36, Y35, and Y34 off to update Channel 1.
RST
Y36 Y35
Off Off
Y35 Off Off
Off On
RST
Off On
On Off
On Off
Y34
On On
RST
On On
Y37
Turn on Y37 to enable all eight output channels of
SET
the first bank.
Y57
Turn off Y57 to disable the second bank of
RST
channels, 9 through 16.
16–13
Y34 Channel
Off Ch. 1
On Ch. 2
Off Ch. 3
On Ch. 4
Off Ch. 5
On Ch. 6
Off Ch. 7
On Ch. 8