
B-63943EN/02 8.CONNECTION TO FANUC I/O Link
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8.4.13 Analog Input Signal Specifications
This section describes the specifications of the analog input signals
used with expansion module D.
Item Specifications Remarks
Number of input
channels (Note)
Four channels
Analog input DC -10 to +10 V
(Input resistance: 4.7 MΩ)
DC -20 to +20 mA
(Input resistance: 250 Ω)
Voltage input or
current input can be
selected on
channel-by-channel
basis.
Digital output
(Note)
12 bits (binary) Represented as
two's complement
Input/output
correspondence
Analog input Digital output
+10V +2000
+5V or +20mA +1000
0V or 0mA 0
-5V or -20mA -1000
-10V -2000
Resolution 5 mV or 20 µA
Overall precision Voltage input: ±0.5%
Current input: ±1%
With respect to full
scale
Maximum input
voltage/current
±15V/±30mA
Minimum
conversion time
(Note)
Ladder scan period of CNC
connected
Number of
occupied
input/output points
(Note)
DI = 3 bytes, DO = 2 bytes
NOTE
This analog input module has four input channels.
The digital output section consists of a group of 12
bits within the three-byte occupied input points.
This means that the channel to be used can be
dynamically selected by the ladder. The channel
switching DO point for channel selection is included
in the two-byte occupied output points.