Omron CP1H CPU Operation Manual page 358

Analog I/O (XA CPU Units)
Shared I/O Specifications
Analog I/O Signal
Ranges
Note
Analog Input Signal
Ranges
324
Item
Resolution
Overall accu- At 25°C
racy
0 to 55°C
−10 to 10 V
D/A conver-
sion data
Other ranges
Item
Conversion time 1 ms/point (6 ms total for 4 analog inputs and 2 analog out-
puts.)
Insulation resistance 20 MΩ min. (at 250 VDC) between isolated circuits
Isolation method Photocoupler isolation between analog I/O terminals and inter-
nal circuits. No isolation between analog I/O signals.
Dielectric strength 500 VAC for 1 minute
Analog I/O data is digitally converted according to the analog I/O signal range
as shown below.
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 Input
When the resolution is set to 1/6,000, the −10 to 10-V range corresponds to
hexadecimal values F448 to 0BB8 (−3,000 to 3,000). The entire data range is
F31C to 0CE4 (−3,300 to 3,300).
When the resolution is set to 1/12,000, the −10 to 10-V range corresponds to
hexadecimal values E890 to 1770 (−6,000 to 6,000). The entire data range is
E638 to 19C8 (−6,600 to 6,600).
A negative voltage is expressed as a two's complement.
The following diagram shows conversion values for 1/6,000 resolution.
Converted Data
Hexadecimal (Decimal)
0CE4 (3300)
0BB8 (3000)
−11 V −10 V
0000 (0)
0 to 10 V Input
When the resolution is set to 1/6,000, the 0 to 10-V range corresponds to
hexadecimal values 0000 to 1770 (0 to 6,000). The entire data range is FED4
to 189C (−300 to 6,300).
Voltage output
1/6000 or 1/12000 (Select in PLC Setup.)
±0.4% full scale
±0.8% full scale
Resolution of 1/6000: F448 to 0BB8 hex FS
Resolution of 1/12000: E890 to 1770 hex FS
Resolution of 1/6000: 0000 to 1770 hex FS
Resolution of 1/12000: 0000 to 2EE0 hex FS
Specification
10 V 11 V
0 V
F448 (−3000)
F31C (−3300)
Section 5-5
Current output