Hitachi Microlok II, Installation, Operation And Troubleshooting Manual

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Microlok II
®
Serial-to-Ethernet Converter (SEC)
Copyright 2019 SM6800O Rev. 1, March 2019 3-2
3.2
11B
Serial Cable Configuration
The SEC is connected to a Microlok II RS-232 Comm port using a customer-supplied standard
DB-9 connector which is connected to the Serial Connection port on the front panel of the SEC.
The serial cable on the Microlok II end must have RTS (Request to Send) and DCD (Data
Carrier Detect) jumpered together (see Table 3-1) (Refer to the Microlok II manuals The SEC’s
pin assignments for the RS-232 DB-9 connectors are shown in
X
Figure 3-2
X
and listed in
X
Table
3-1
X
.
SOCKET OR FEMALE
DB-9 CONNECTOR
5 (SIG COMM)
4
3 (TXD)
2 (RXD)
1
9
8
7
6
Figure 3-2 - DB-9 Connector on the SEC
Table 3-1 - SEC to Microlok II Connections
SEC (DB-9) Microlok II Connection
Pin No. Signal Refer to the Microlok II Service Manual SM 6800B, Section 3.5
for connection to the Microlok II System.
For Port 3, Jumper Pin C14, RTS (Output), to Pin E10, DCD
(Input), and Jumper Pin E18, RXREF, to C18, Signal Common.
For Port 4, Jumper Pin A14, RTS (Output), to Pin C16, DCD
(Input).
2 RXD (Input)
3 TXD (Output)
5 Signal Common
3.3
12B
Selecting the Ethernet Cable
The Ethernet port is a standard eight-pin RJ45 connector which uses any of the widely
available Category 5 (CAT5) or better cable (standard off-the-shelf cable). An Ethernet
crossover cable is required to connect the SEC directly to a PC and a standard Ethernet cable
is used to connect the SEC to the network.