
8.CONNECTION TO FANUC I/O Link B-63943EN/02
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• Required parts
(a) For making up an I/O Link using the optical link adapter,
the following parts are necessary:
<1> Optical I/O Link adapter ................... 2
<2> Interunit connecting cable ................. 2
<3> Optical cable...................................... 1
• Relay with an optical fiber connection adapter
For the outline drawing of the optical fiber connection adapter,
see Appendix D.
NOTE
Optical fiber cables can be relayed only at are
location.
When a high-speed optical link adapter is used, no
optical fiber connection adapter can be used.
• Maximum transmission distance with an optical fiber cable(s)
The table below shows the maximum transmission distance with
an optical fiber cable(s), which varies depending on whether a
connection adapter is used for a relay.
Number of relay Maximum transmission
distance
0 200m Standard type
1 100m (total)
0 100m High-speed type
1 N/A
8.2.3 Connection when Multiple Channels of FANUC I/O Links are
Used
With 30i series, up to four channels can be used for the FANUC I/O
Link interface. This feature allows the number of I/O points to be
increased to 4096 (4096 input points and 4096 output points).
Series 30i-MODEL A PMC Programming Manual is available
separately to let you know how to use this feature, PMCs that can take
advantage of this feature, and the series and version of their
management software as well as the series and version of the CNC
management software.
Signals for three channels are assigned to the FANUC I/O Link
connector (JD51A) on the main board. When using only one channel,
see Subsection 8.2.1.
When using the second and third channels, use the I/O Link branching
adapter for two channels or the I/O Link branching adapter for three
channels to branch the FANUC I/O Link.
NOTE
A maximum of eight groups can be connected to
the FANUC I/O Unit-Model B with four channels.