Omron CPM1 - PROGRAMING MANUAL 02-2001 Programming Manual page 200

Analog I/O Units
Caution
!
Lock Levers
Analog I/O Signal Ranges
Analog Input Signal
Ranges
180
2. Use the connector cover provided with the CPU Unit to protect the output
connector when it is not used.
Do not touch the cables during operation. Static electricity may cause operating
errors.
Used to secure the Expansion Unit.
Analog I/O signal ranges are digitally converted as described in this section.
The Analog I/O Unit converts analog input data to digital values. The digital val-
ues depend on the input signal ranges, as shown in the following diagrams.
When the input exceeds the specified range, the AD converted data will be fixed
at either the lower limit or upper limit.
–10 to 10 V
The –10- to 10-V range corresponds to the hexadecimal values F448 to 0BB8
(–3000 to 3000). The entire data range is F31C to 0CE4 (–3300 to 3300). A neg-
ative voltage is expressed as a two's complement.
Converted Data
Hexadecimal (Decimal)
–11 V –10 V
0 to 10 V
The 0- to 10-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)
–0.5 V
FED4 (–300)
0CE4 (3300)
0BB8 (3000)
0000 (0)
0 V
F448 (–3000)
F31C (–3300)
0 V
Section 3-1
10 V 11 V
10 V 10.5 V