Every RS-232 serial device connected to a Model 305X Series unit
sub-channel must have a special interface cable. On one end, this
interface cable must have an RJ-45 male plug; on the other end, the
cable must have a connector that adapts to your RS-232 serial device.
The diagrams below show pin connections between the Model 305X
sub-channels and common RS-232 interfaces. You may use these
diagrams to construct your own cables, or you may purchase cables
from Patton Electronics.
RS-232 (PC-XT or other DTE)
Model 3054 or 3056
DB-25 Pin No.
RJ-45 Pin No.
7 (SG)
4 (SG)
3 (RCV)
5 (XMT)
2 (XMT)
6 (RCV)
4 (RTS)
8 (CTS)*
5 (CTS)
7 (RTS)*
6 (DSR)
8 (DCD)
20 (DTR)
RS-232 (Modem or other DCE)
Model 3054 or 3056
DB-25 Pin No.
RJ-45 Pin No.
7 (SG)
4 (SG)
3 (XMT)
5 (XMT)
2 (RCV)
6 (RCV)
5 (CTS)
8 (CTS)*
4 (RTS)
7 (RTS)*
6 (DSR)
8 (DCD)
20 (DTR)
RS-232 (PC-AT or other DTE)
Model 3054/3056/3058 (DCE)
DB-9 Pin No.
RJ-45 Pin No.
5 (SG)
4 (SG)
2 (RCV)
6 (XMT)
3 (XMT)
5 (RCV)
7 (RTS)
8 (RTS)*
8 (CTS)
7 (CTS)*
1 (DSR)
4 (DCD)
6 (DTR)
*NOTE: Hardware flow control signals available only on Models
3054/AR and 3056/AR (See Section 4.2.4 Flow Control
Requirements).
6
4.0 INSTALLATION
This section describes how to connect each Model 305X to the RS-
232 or RS-422 sub-channel devices, to another Model 305X over the
main channel, and to the power supply.
4.1 .2 SUB-CHANNEL CONNECTIONS
The RJ-45 female sub-channel ports on the back of the Model
3054, 3056, and 3058 are labeled 1 - 4 (Model 3054), 1 - 6 (Model
3056) and 1 - 8 (Model 3058). Each sub-channel port designates
single communication path from the local multiplexer to the remote
multiplexer. That is, the serial device connected to port 1 on the local
multiplexer will communicate with the serial device that is connected to
port 1 on the remote multiplexer. Figure 3 shows the port connections
on the rear of the Model 3058.
4.1.1 RS-232 Sub-Channel Connections
The Model 305X Series multiplex and de-multiplex data signals
from four, six, or eight EIA-232 DTE (terminals, PCs) DCE (modems)
devices. Most DTE and DCE devices use a D-Sub 25 or D-Sub 9
connector to transmit and receive data as well as operate flow control.
Since the sub-channel ports on the Model 305X Series are modular RJ-
45 jacks, you will need an adapter cable to make the proper
connections.. Figure 4, below, shows the pin assignments on the RJ-
45 sub-channel modular jack.
*NOTE: Hardware flow control signals are available only on RS-232
Versions of Models 3054AR and 3056AR (See Section 4.2.4 Flow
Control Requirements).
Figure 4: Model 305X RJ-45 Sub-Channel Pin Numbers
CHANNELS
POWER
LINE
8
7
6
5
4
3
2
1
Figure 3: Model 3058 Port Connections
1 no connection
2 no connection
3 no connection
4 (SG)
5 (TX Data) from 305X
6 (RX Data) to 305X
7 (RTS) from 305X*
8 (CTS) to 305X*
1
2
3
4
5
6
7
8
Main Channel
Power Jack
Sub-Channels
5
