Omron CPM1 - PROGRAMING MANUAL 02-2001 Programming Manual page 201

Analog I/O Units
0 to 5 V
The 0- to 5-V range corresponds to the hexadecimal values 0000 to 1770 (0 to
6000). The entire data range is FED4 to 189C (–300 to 6300). A negative voltage
is expressed as a two's complement.
Converted Data
Hexadecimal (Decimal)
189C (6300)
1770 (6000)
0000 (0)
–0.25 V
FED4 (–300)
1 to 5 V
The 1- to 5-V range corresponds to the hexadecimal values 0000 to 1770 (0 to
6000). The entire data range is FED4 to 189C (–300 to 6300). Inputs between
0.8 and 1 V are expressed as two's complements. If the input falls below 0.8 V,
open-circuit detection will activate and converted data will be 8000.
Converted Data
Hexadecimal (Decimal)
189C (6300)
1770 (6000)
0.8 V
0000 (0)
FED4 (–300)
0 to 20 mA
The 0- to 20-mA range corresponds to the hexadecimal values 0000 to 1770 (0
to 6000). The entire data range is FED4 to 189C (–300 to 6300). A negative volt-
age is expressed as a two's complement.
Converted Data
Hexadecimal (Decimal)
189C (6300)
1770 (6000)
0000 (0)
–1 mA
FED4 (–300)
0 V
1 V
0 mA
Section 3-1
5 V 5.25 V
5 V 5.2 V
20 mA 21 mA
181