Specifications
6.1.3 Output Specifications
Item
Number of outputs
Voltage
Output
range
(Resolution
Current
-10 to 10 V DC
-5 to 5 V DC
Digital
0 to 10 V DC
output
0 to 5 V DC
range
0 to 20 mA
4 to 20 mA
Conversion speed
Voltage
Overall
precision
Current
Output impedance
Maximum outputcurrent
Allowable outputload resistance
Between input
terminal to
Insulation
internal circuit
method
Between the
channels
External connection method
(Note 1):The resolution in the 12-bit mode is 1/4,000. Also, the output current range in the 12-bit mode is 4 to 20 mA
for AFP0RDA4, and 0 to 20 mA for AFP0RA21/AFP0RA42.
(Note 2): The time shown in the figure below is required to reflect the values in the output device area (WY) of the
control unit as analog output values. The following figure shows the values when the range of -10 to +10V is
used.
Precautions on the characteristics of analog output
When the power to the control unit turns on or off, voltage (equivalent to 2 V) may be output for approx. 2 ms from
the output terminal. If it will be a problem on your system, take necessary measures externally to avoid the
transitional condition, e.g. turning on PLC before external devices or turning off external devices before PLC.
6-4
Analog output unit
AFP0RDA4
4 ch
-10 to 10 V DC
(Resolution:1/16,000) (Note 1)
-5 to 5 V DC
(Resolution:1/16,000)
0 to 10 V DC
(Resolution:1/16,000)
0 to 5 V DC
(Resolution:1/16,000)
0 to 20 mA
(Resolution:1/16,000) (Note1)
4 to 20 mA
(Resolution:1/16,000) (Note1)
K-2000 to K2000 (12-bit mode)/ K-8000 to K8000 (14-bit mode)
K-8000 to K8000 (14-bit mode only)
K0 to K16000 (14-bit mode only)
K0 to K4000 (12-bit mode)/ K0 ~ K16000 (14-bit mode) (Note1)
500 µs / All channels (Note 2)
±0.2%F.S. or less (at 25°C) ±0.4%F.S. or less (at 0 to +55°C)
±0.3%F.S. or less (at 25°C) ±0.6%F.S. or less (at 0 to +55°C)
0.5 Ω or less (Voltage output)
±10 mA (Voltage output)
600 Ω or less (Current output)
Photocoupler
Insulation-type DC/DC converter
Uninsulated
Connection terminal block connection
Description
Analog I/O unit
AFP0RA21
1 ch
AFP0RA42
2 ch