G&L MMC-A2, Hardware Manual

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Standalone Digital MMC Control
G & L Motion Control Inc. MMC Hardware Manual 107
•
The available Ethernet Port to Ethernet Device cables are
described in
Table 5-19
Table 5-17: Ethernet Port Pin Descriptions
Function Notes Pin
Receive Data + Receives data from connected device. 3
Receive Data - Receives data from connected device. 6
Transmit Data + Transmits data to connected device. 1
Transmit Data - Transmits data to connected device. 2
Shield Ground Provides a path for shield current through the
chassis to an external single point ground. Shell
Table 5-18:
Ethernet Port Pin Assignments
Pin Signal In/Out Connector Pinout
1 Transmit Data + Out
RJ-45
2 Transmit Data - Out
3 Receive Data + In
4
Termination Resistors
a
a. Pins 4, 5, 7, and 8 are tied to termination resistors on the Control. Standard Ethernet cables
contain 8 wires. The Control only uses 4 of these wires as shown. Connecting the 4 unused
wires to pins 4, 5, 7, and 8, (as will be done in a standard Ethernet cable) reduces noise that
can be induced from the unused wires to the Transmit and Receive wires.
In
5
Termination Resistors
a In
6 Receive Data - In
7
Termination Resistors
a In
8
Termination Resistors
a In
Connector
Shell Shield In
1
8
ACTIVITY
LINK
ENET
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