Omron CP1E Series - Page 184

9 Using Expansion Units and Expansion I/O Units
9-24
CP1E CPU Unit Hardware User’s Manual(W479)
1 to 5 V
Voltages in the 1 to 5 V range correspond to
hexadecimal values 0000 to 1770 (0 to
6,000). The range of data that can be con-
verted is FED4 to 189C hex (-300 to 6,300).
Voltage in the range of 0.8 to 1 V is
expressed as a two’s complement.
If an input is below the range (i.e., less than
0.8 V), the open-circuit detection function is
activated and the data becomes 8,000.
0 to 20 mA
Currents in the 0 to 20 mA range corre-
spond to hexadecimal values 0000 to 1770
(0 to 6,000). The range of data that can be
converted is FED4 to 189C hex (-300 to
6,300). A negative current is expressed as a
two’s complement.
4 to 20 mA
Currents in the 4 to 20 mA range corre-
spond to hexadecimal values 0000 to 1770
(0 to 6,000). The range of data that can be
converted is FED4 to 189C hex (-300 to
6,300). Current in the range of 3.2 to 4 mA
is expressed as a two’s complement. If an
input is below the range (i.e., less than 3.2
mA), the open-circuit detection function is
activated and the data becomes 8,000.
1 V 5 V
5.2 V
0.8 V
FED4 (−300)
189C (6300)
1770 (6000)
0000 (0)
Converted Data
Hexadecimal (Decimal)
0 mA 20 mA
21 mA
−1 mA 0000 (0)
FED4 (−300)
189C (6300)
1770 (6000)
Converted Data
Hexadecimal (Decimal)
4 mA 20 mA
20.8 mA
3.2 mA
FED4 (
−300)
189C (6300)
1770 (6000)
0000 (0)
0 mA
Converted Data
Hexadecimal (Decimal)