Units Selection For 32 Input Mode - Automation Direct DL405 User Manual

3–8
F4–04AD 4-Channel Analog Input
Units Selection for
32 Input Mode
The two jumpers for units selection
determine the data format of the digital
values of the channel inputs. They only
apply to 32 Input mode operation, so the
module ignores the position of these
jumpers during 16
operation. The two jumpers are binary
encoded to offer four possible settings.
The units selection programmed by
these jumpers applies simultaneously to
all four input channels, and to all 32 Input
Mode input signal ranges except the two
bipolar BCD ranges. In those ranges, the
module ignores the units select jumper
settings.
The first two selections in the table offer more resolution than the last two
selections, which are included for compatibility with previous application software.
Accordingly, they are not recommended for new applications. After setting the
configuration jumpers, you are ready to install the module in the base and connect
the field wiring.
When you power up the module for the first time, if the jumper configuration is
invalid the RUN light on the module's faceplate will NOT turn on and the Channel 1
LED will flash quickly. If this occurs, review this section and verify that the jumper
settings are correct.
NOTE: If you are replacing a D4-04AD module with the F4-04AD in an existing
application, skip to the special section at the end of this chapter, "Configuration
Cross-Reference, D4-04AD to F4-04AD".

Units Selection for 32 Input Mode

12-Bit Magnitude Plus Sign, 13 Bit
Format,
–4095 to +4095
2's Complement, 13-Bit Format
2's Complement, 12-Bit Format
12-Bit Magnitude, 0 to 4095
Input mode
Jumper
Settings
Units
1
Select
0
Jumpers
Notes
Recommended for
1
most applications
0
Recommended two's
1
complement format
0
Not recommended for
1
new applications
0
Not recommended for
1
new applications
0