Output Bit Assignments; Channel Select Bits - Automation Direct DL405 User Manual

Output Bit You may recall the F4–04DA–2 module requires 16 discrete output points from the
Assignments CPU. These points provide:
Since all output points are automatically mapped into V-memory, it is very easy to
determine the location of the data word that will be assigned to the module.
Within this V-memory location the individual bits represent specific information
about the analog signal.
Channel Select The pair of output bits 12 and 13 are
Bits binary encoded to select the channel
that will be updated with the data. The
bits are assigned as follows.
Bit
13
Off
Off
On
On
On each scan, the channel selected by
these two bits will be updated. Unlike
some modules, there is not a way to
select no channel for updating on a
particular scan.
S
The digital representation of the analog signal.
S
Identification of the channel that is to receive the data.
Bit
Bit
12 Channel
Off 1
On 2
Off 3
On 4
F4–04DA–2 Analog Voltage Output
F4–04DA–2
8pt 8pt 16pt 16pt
Output Output Output Output
Y0 Y10 Y20 Y40
– – – –
Y7 Y17 Y37 Y57
V40500 V40502
V40501
MSB
15 14 13 12 11 10 9 8 7 6 5
Y Y Y
3 3 2
7 0 7
MSB
1 1 1 1 1
5 4 3 2 1
14–11
16pt 16pt
Input Input
LSB
4 3 2 1 0
Y
2
0
V40501
LSB
1 9 8 7 6 5 4 3 2 1 0
0

– channel select bits