Module Operation - Automation Direct DL405 User Manual

13–6
F4–04DA–1 Analog Current Output

Module Operation

DL430 Special
Requirements
Even though the module can be placed in any slot, it is important to examine the
configuration if you are using a DL430 CPU. As you will see in the section on writing
the program, you use V-memory locations to send the analog data. As shown in the
following diagram, if you place the module so the output points do not start on a
V-memory boundary, the instructions cannot access the data.
Correct!
Wrong!
Data is split over two locations, so instructions cannot access data from a DL430.
V40500
MSB
Y Y Y
3 3 2
7 0 7
F4–04DA–1
8pt 8pt 16pt 16pt
Output Output Output Output
Y0 Y10 Y20 Y40
– – – –
Y7 Y17 Y37 Y57
V40500 V40502
V40501
MSB
Y Y Y
3 3 2
7 0 7
F4–04DA–1
8pt 16pt 8pt 16pt
Output Output Output Output
Y0 Y10 Y30 Y40
– – – –
Y7 Y27 Y37 Y57
V40501
LSB MSB
Y Y
2 1
0 7
16pt 16pt
Input Input
LSB
Y
2
0
16pt 16pt
Input Input
LSB
Y Y Y
1 7 0
0