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3.4. Network configuration
Make up the network as follows.
- Transmission/reception signals (NETA, NETB)
Make up the communication path by connecting all transmission/reception data cables (No polarity).
- Grounding the shield of cable (SHLD)
Connect the all shield lines of network cable. Ground through a metal film resistor of 470k ohm, 1/4W,
10% or more accurate so that static electricity does not increase (at the point where it separated from
the power ground of inverters or motors).
- Termination resistor (Please refer to "3.5. Termination resistor")
Only one terminal resistor is needed for the segment of the free topology. It can also be placed
wherever it is on the free topology segments. (2 termination resistors in case of Bus topology)
- Network cable length (for recommended cable usage)
Free-Topology: device-to-device distance is 400m or less, total wire length is 500m or less
Bus-Topology: total wire length is 1400m or less, stub length is 3m or less.
- Connection image
Host computer
/ Router
Terminal 1
Terminal 2
Shield grounding
resistor
Network configuration is shown in the figures below. This L
TP/FT-10 channel type transceiver. The free topology wiring supported by the TP/FT-10 channel type
accommodates bus, star, loop, or several combinations of these topologies shown in below
- Network configuration example
Host computer
Router
LIU007Z
VF-FS1
Number of connected units to the router: 63 nodes at maximum
- The free topology wiring example.
Termination
resistor
N.B.: Do not connect the SHLD terminal to the power ground of inverters or other units.
Keep the network cables 20cm or more separate from the power cables to prevent from
malfunctioning due to electromagnetic noise.
Twisted pair cable with shield
LIU007Z
NETA
NETB
SHLD
Free topology: 63 units connected at maximum
Router
LIU007Z
VF-FS1
- 10 -
LIU007Z
LIU007Z
NETA
NETB
SHLD
W
ON
ORKS
Router
Complex topology can be configured
means a node
E6581371
NETA
NETB
SHLD
Terminal resistor
52.3ohm, 1/8W
communication option has
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