Yaskawa Microtrac DSD Drives LAN Interface PCB - Manual (Page 3)

INTRODUCTION
The LAN Interface PCB, REQUIRED in a
system drive, makes the physical
connection to the LAN (Local Area Network)
for the LAN controling circuitry of the
System I/O PCB. The LAN Interface PCB
uses a High Impedance Transceiver (HIT) for
signal transceiving in order to utilize a bus
topology on the LAN. The LAN coaxial cable
is connected to this board (through
connector J2) by use of a BNC "T"
connector. A 10-conductor ribbon cable
connects this board (from connector J1)
with the LAN controlling circuitry of the
System I/O PCB (through its J3 connector).
INSTALLATION AND HOOKUP
This board is factory installed on the drive
and should require no further connections
to be made to it. However, if it should
become necessary to install the board in the
field, then the following steps should be
taken:
WARNING
HAZARDOUS VOLTAGES CAPABLE OF
SEVERE INJURY OR DEATH MAY BE
PRESENT WITHIN CABINET. BEFORE
OPENING CABINET DOOR, DISCONNECT
AND LOCK-OUT INCOMING POWER.
CAUTION
TO AVOID DAMAGE TO ELECTRONIC
COMPONENTS, DO NOT MAKE ANY
CONNECTIONS WITH POWER APPLIED.
USE PROPER ELECTROSTATIC
DISCHARGE (ESD) PROCEDURES WHEN
HANDLING PRINTED CIRCUIT BOARDS.
1. Turn off incoming power.
2. Refer to Figure 1 for the mounting
location for this board.
3. If replacing an existing board,
disconnect the LAN coaxial cable and the
10-conductor ribbon cable from connectors
J2 and J1 on the board. Then unmount the
existing board.
4. Mount this board into its proper position.
IMPORTANT
The mounting hardware provides the
connection to power cube chassis ground
for this board. This is necessary to provide
a return path for the snubber network of
the LAN.
5. Connect the 10-conductor ribbon
cable (from J3 on the System I/O PCB) to
J1 on this board, and connect the coaxial
cable BNC "T" connector to J1 on board.
SETUP
There are no switches, jumpers, or
potentiometers to set up.
OPERATIONAL DESCRIPTION
NODE DEFINITION
The PAC language defines a partic-
ular Input or Output by use af a Node, a
Channel and a Subchannel. For the LAN
Interface PCB, the Node, Channel and
Subchannel are those of the System I/O
PCB. The definitions are beyond the scope
of this document; however, they can be
found in the User Reference Sheet for the
System I/O PCB.
3 I/O 787-10