Omron PRT1-COM Operation Manual page 115

Analog Input Units
Components
I/O Unit Interface
Communications Connector 1
(on the Communication Unit side)
DIP Switch (Refer to page 106.)
On the left side of the Cassette.
Pin 1 to 6: Input range
Pin 7: Averaging
Pin 8, 9: Reserved for system use (OFF)
Pin 10: Software setting enable/disable
Characteristics
Item
Input signal range 0 to 5 V, 1 to 5 V, 0 to 10 V,
or --10 to 10 V
Max. signal input ±15 V
Input impedance 1 MΩ min.
Resolution 1/6000 (FS)
Accuracy y 25_C ±0.3% FS
--10_C to ±0.6% FS
55_C
Conversion time With 4 inputs: 4 ms/4 points
Converted output data Binary (4-digit hexadecimal)
(Binary)
--10- to 10-V range:
Other signal ranges:
Averaging function Settable (via DIP switch)
Open circuit detection Provided. (with a range of 1 to 5 V or 4 to 20 mA)
Dielectric strength 500 VAC; detected current 1 mA (between communica-
tions section and analog input, and between internal
power supply and analog input)
Isolation method Photocoupler insulation (between communications part
and analog input)
(no insulation between analog inputs)
TS Indicator (Refer to page 162.)
Shows the communications status of the I/O Unit interface.
Normal communications: Lit green
I/O Unit interface error:
During initialization, or with no power supply: Not lit
PWR Indicator
Internal power being supplied: Lit green
No internal power supply:
DIN Track Mounting Hook
Specification
Voltage inputs
0 to 20 mA or 4 to 20 mA
±30 mA
Approx. 250 Ω
±0.4% FS
±0.8% FS
F448 to 0 to 0BB8 full scale
0000 to 1770 full scale
Lit red
Not lit
U.ERR Indicator (Refer to page 163.)
Unit error: Lit red
Unit normal: Not lit
I/O Unit Interface
Communications Connector 2
(on the terminator side)
Cassette (Refer to page 166.)
Detach by pressing on the lower part and
pulling outwards.
Terminal Block
Section 7-1
Current inputs
105