Module Operation - Automation Direct DL405 User Manual

Module Operation

DL430 Special Even though the module can be placed in any slot, it is important to examine the
Requirements 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!
Data is correctly entered so output points
Data is split over three locations, so instructions cannot access data from a DL430.
V40502
MSB
Y Y Y
5 5 4
7 0 7
F4–04DAS–1 4-Channel Isolated 4–20mA Output
start on a V-memory boundary address.
V40502
MSB
Y Y Y
5 5 4
7 0 7
Wrong!
LSB MSB
Y Y
4 3
0 7
F4–04DAS–1
16pt 32pt 16pt
Output Output Input
Y0 Y20 X0
– – –
Y17 Y57 X17
V40500 V40503
MSB
LSB
Y
Y
3
4
7
0
F4–04DAS–1
8pt 32 8pt
Output Output Input
Y0 Y10 X0
– – –
Y7 Y47 X7
V40501
MSB
Y Y Y Y
3 2 2 1
0 7 0 7
32 8pt 8pt
Input Input Input
X20 X60
X70
– –
–
X57 X67
X77
V40501
Y Y
3 2
0 7
16pt 16pt 16pt
Inut Input Input
X20
X40
X60
–
–
–
X37
X57
X77
V40500
Y Y
1 7
0
17–5
LSB
Y
2
0
LSB
Y
0