Patton electronic 2085 Daisy Chain Topology, Host First Slave Other Slaves, Operating the Model

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4.2.2 DAISY CHAIN TOPOLOGY

Using a daisy chain topology, you may connect several Model 2085s together in a master/slave arrangement. Maximum distance between the units will vary based upon the number of drops, data rate, wire gauge, etc. Call Technical Support for specific distance estimates.

Figure 8 (below) shows how to wire the two-pair cables properly for a Model 2085 daisy chain topology. Note that the ground connection is not needed.

HOST

FIRST SLAVE

OTHER SLAVE(S)

XMT+

---------------------RCV+-----------------------

RCV+

XMT-

---------------------RCV- -----------------------

RCV-

RCV+

---------------------XMT+-----------------------

XMT+

RCV-

---------------------XMT- -----------------------

XMT-

Figure 8. Daisy chain wiring for Model 2085 host and slaves

4.3 CONNECTION TO THE RS-232 INTERFACE

Once you have properly configured the Model 2085 and connected the twisted pair wires correctly, simply plug the Model 2085 directly into the DB-25 port of the RS-232 device. Remember to insert and tighten the two captive connector screws.

(Note: If you must use a cable to connect the Model 2085 to the RS-232 device, make sure it is a straight through cable of the shortest possible length—we recommend 6 feet or less).

4.4 OPERATING THE MODEL 2085

Once the Model 2085 is properly installed, it should operate transparently—as if it were a standard cable connection. Operating power is derived from the RS-232 data and control signals; there is no “ON/OFF” switch. All data signals from the RS-232 and RS-485 interfaces are passed straight through. Additionally, one hardware flow control signal is passed in each direction.

APPENDIX A

PATTON MODEL 2085 SPECIFICATIONS

Transmission

 

Format:

Asynchronous

Data Rate:

Up to 115,200 bps

Range:

Up to 9 miles

RS-232 Interface:

DB-25, male or female (DCE/DTE

 

switchable)

RS-485 Interface

 

Options:

DB-25, male or female; RJ-11 or RJ-45 jack;

 

terminal block with strain relief

Transmit Line:

2, 4 wire unconditioned twisted pair

Transmit Mode:

4-wire, full or half duplex; 2-wire half duplex

Control Signals:

DSR turns “ON” immediately after the

 

terminal raises DTR; DCD turns “ON” after

 

recognizing the receive signal from the line;

 

CTS turns “ON” after the terminal raises

 

RTS.

RTS/CTS Delay:

8 mSec or “no delay”

Carrier:

The carrier is switch selected either

 

continuous operation or switched operation,

 

controlled by RTS

Surge Protection:

600W power dissipation at 1 mS

Power:

Draws operating power from RS-232 data

 

and control signals; no AC power or

 

batteries required.

Temperature:

0 to 50º C

Humidity:

5 to 95%, non-condensing

Size:

2.66” x 2.10” x 0.73”

15

16

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Contents Model Service Radio and TV InterferenceCE Notice Description FeaturesDIP Switch Configuration Setting the DCE/DTE SwitchDIP Switch Settings S1 Summary TableS1-7 and S1-8 2-Wire/4-Wire Modes S1-4 Echo ModeConfiguration Switch Applications S1-5 Carrier Control Method1 4-WIRE Connection Using the DB-25 2 4-WIRE Connection Using RJ-11 or RJ-45RJ-11 Signal RJ-45 SignalModel RS-485 Device 3 4-WIRE Connection Using Terminal BlocksSignal RS-485 Signal 4 2-WIRE ConnectionWiring for Multipoint Circuits Star TopologyDaisy Chain Topology Appendix a Patton Model 2085 SpecificationsHost First Slave Other Slaves Connection to the RS-232 InterfaceDirection DCE Setting Appendix B Patton Model 2085 RS-232 PIN Configurations

2085 specifications

The Patton Electronics 2085 is a robust and versatile solution designed for efficient data communication over twisted pair lines. Ideal for both residential and industrial applications, this device guarantees reliable performance and high-quality data transfer.

One of the main features of the Patton Electronics 2085 is its capability to support high-speed data transmission, making it an excellent choice for users requiring efficient connectivity. With a data rate of up to 10 Mbps, it ensures that large volumes of data can be transferred quickly, accommodating the increasing demand for speed in modern networks.

Another significant characteristic of the 2085 is its advanced modulation techniques, which include Carrierless Amplitude Phase (CAP) and Discrete Multitone (DMT) modulation. These technologies enhance the reliability of data transmission by maximizing the use of existing telephone lines. With these modulation techniques, users can expect stable connections even in challenging environments, demonstrating the device's resilience.

The Patton 2085 is built with versatility in mind, offering various operating modes. It can function as a simple transparent modem or as a more complex remote access server. This dual functionality caters to a broad range of applications, from connecting remote terminals to accessing local area networks.

Furthermore, the unit boasts an easy-to-use interface, facilitating seamless installation and configuration. The front panel includes LED indicators to provide real-time feedback on the link status and power. This attention to user experience simplifies troubleshooting and ensures that users can maintain optimal performance.

In terms of connectivity, the 2085 features standard RJ-45 ports for Ethernet connections, allowing for straightforward integration into existing setups. The device operates well in point-to-point and multipoint configurations, providing flexibility for varying network topologies.

Security is also a paramount feature of the Patton Electronics 2085. It includes built-in encryption capabilities, safeguarding against unauthorized access and data breaches. This makes it particularly suitable for sensitive environments where data integrity is a critical requirement.

In conclusion, the Patton Electronics 2085 stands out as an effective solution for those seeking reliable and high-speed data transmission over twisted pair lines. With its impressive feature set, advanced technologies, and user-friendly design, it remains a compelling choice in the realm of electronic communications. Whether utilized in industrial setups or home networks, the 2085 delivers solid performance and adaptability to meet diverse connectivity needs.
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