Automation Direct DL405 User Manual page 48

Channel 1
Channel 1, Channel 2
Channel 1, Channel 2, Channel 3
Channel 1, Channel 2, Channel 3, Channel 4
Selecting 16 The top jumper selects either 16 Input (remove
Input or 32 jumper) or 32 Input (install jumper) operating
modes. This is the number of X inputs the module
Input Modes
requires in the PLC memory map. The module can
interface to the CPU in two
depending on the setting of this jumper. Use 32
Input mode if you want to maintain compatibility
with PLC software written for the D4-04AD, or to
use features not available in 16 Input mode, and to
simplify supporting ladder logic. However, use 16
Input Mode if you must consume fewer X inputs.
The feature chart on the next page can help you
choose the mode for your application.
Mode
16 Input
32 Input
Number of X Input Bits Required From CPU
Input Value, 12-Bit, Plus Sign Bit
Input Value, 2's Complement,12 Bits
Input Value, 2's Complement, 13 Bits
Input Value, 12-bit
Input Value, Binary-Coded Decimal, 16 bits
(for bipolar voltage ranges only)
Active Channel Indicator Inputs
Broken Transmitter Detection
Sign Bit(s), indicates negative analog value
Based on this jumper selection, the module can behave as two different modules
from the CPU point of view. This chapter covers both modes, so only the CPU
program examples labeled for the mode you choose will apply.
Channel(s) Selected
different ways,
Jumper I/O Points Consumed
Remove X0 – X17
Install X0 – X37
Features
F4–04AD 4 Channel Analog Input
Jumper Settings
16 Input
Mode
16
Yes
No
No
Yes
No
Yes
1 bit
(combined)
1 bit
(combined)
3–5
1
0
1
0
1
0
1
0
Mode
Select
Jumper
32 Input
Mode
32
Yes
Yes
Yes
Yes
Yes
Yes
4 bits
(individual)
4 bits
(individual)