Toshiba V Series, Руководство пользователя

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6F8C0904
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9.4 Network Wiring
9
(e) Wiring routes
The desirable routes for laying the transmission cable can be ordered as follows.
• Using a dedicated route
• Using a route dedicated to computer system related lines
• Using a route dedicated to general measurement equipment
• Using a route dedicated to plant control related lines
(2) Overview of panel internal wiring
When 10BASE2 cable is used with the EN311, coaxial cable is connected to the
EN311, and when 10BASE5 cable is used, AUI cable is connected to the EN311.
Keep the following points in mind when wiring inside the control panel.
(a) Wiring path
Use the weak-signal route within the panel for wiring the coaxial cable.In
particular, keep the coaxial cable at least 50 cm away from power supply cables.
(b) Securing coaxial cable
Secure the coaxial cable with clamp materials so that the weight of the cable is
not applied to the cable's connectors.
Remember that the cable not must be bent beyond its minimum-bending radius.
(3) Notes on laying and wiring 10BASE2 and 10BASE5 coaxial cable
(a) Only use this coaxial cable indoors. Consult with a specialist contractor if coaxial
cable must be routed outdoors.
(b) Connect terminators to both ends of the coaxial cable.
(c) Insulate all exposed metal parts other than the coaxial cable installation point
from ground and other metal parts.
10BASE5: Plugs, adapters, terminators
10BASE2: BNC plugs, adapters, terminators, T connectors.
(d) For safety, ground, at a single point, the coaxial cable's external conductor to a
point with a resistance to ground of 100W or less.
Also, prepare a dedicated network system ground that is not shared with other
equipment.
(e) Contact the manufacturer of the cable with regard to the physical characteristic
value of the coaxial cable allowable minimum-bending radius.
(f) Avoid locations with high temperature, high humidity, dust, or oil mist when
installing coaxial cable.
(4) Notes on laying and wiring AUI cable
(a) When connecting the AUI cable to the EN311 or MAU connectors, use the slide
latches to secure the connectors firmly.
(b) Since the AUI cable external conductor is connected to the EN311 MAU power
supply connection terminal block FG pin, be sure to ground the FG pin with a
resistance to ground of 100 W or less.
(c) Contact the manufacturer of the cable with regard to the physical characteristic
value of the AUI cable allowable minimum bending radius.
(d) Avoid locations with high temperature, high humidity, dust, or oil mist when
installing AUI cable.