
5. CONNECTION TO CNC PERIPHERALS
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About cable assemblies
Oki Electric Cable Co., Ltd. can offer a cable assembly that uses the
TM21CP–88P(03) connector made by Hirose Electric Co., Ltd. To
get this cable assembly, negotiate directly with the manufacturer on its
specifications (cable length, shipping test, package, etc.).
An 8–pin modular connector called the RJ–45 is used with a twisted–pair
cable for Ethernet interfaces. Use the connector listed below or
equivalent.
Manufacturer Specification Remark
Connector used with cable
AWG26 4P TPMC–C5–F(SB)
TM21CP–88P(03) Hirose Electric Co., Ltd.
(*)
NOTE
About TM21CP–88P(03)
Connector (manufacturer’s standard product)
Drawing number: A63L–0001–0823#P
Manufacturer: Hirose Electric Co., Ltd.
Manufacturer’s model number: TM21CP–88P(03)
Complying with EIA/TIA 568A categories 3 and 5
Ask Hirose Electric Co., Ltd. for explanations about how to
attach the connector to a cable.
(Hirose Electric Co., Ltd. offers the TM21CP–88P(03) Wiring Procedure
Specification (Engineering Specification No. ATAD–E2367) to explain
the related technical information.)
Ethernet cable wires belong to group C. See descriptions elsewhere for
explanations about how to separate them from wires in group A or B.
If any cable led into the CNC requires shielding, clamp it as shown below.
The same method is used also to shield Ethernet twisted–pair cables. The
clamp shown in the figure works not only for cable fixing but also for
shield processing. Shield processing is very important to maintain the
stable operation of the system. Do not forget attach this clamp. See
Subsection 3.5.5, ”Cable Clamp and Shield Processing,” for details.
Even when the machine satisfies its grounding requirements, noise from
the machine may get on communication lines depending on the way the
machine is installed and its environment, resulting in a communication
error. Separating and isolating the Ethernet backbone cable and PC from
the machine can prevent noise from getting on the communication lines.
An example of connection is shown below.
Connector specification
5.4.3
Anti–Noise Measure
Separating signal lines
Cable clamp and shield
processing
5.4.4
Network Installation