Loconet – dccwiki amazing 3d leg tattoo

Loconet is part of a DCC train control system designed by digitrax to control a model train layout. LocoNet is a peer to peer local area network (LAN) designed for very high traffic capacity and free-form wiring as well as future system expandability and ease of upgrade. It is a separate circuit from the track power used to run model trains.

Digitrax developed loconet to handle the communications between throttles, stationary decoders, and other devices that need to communicate with the command station. The command station processes, assembles and routes this and other information to either the track or to the loconet only. Cool first tattoos for guys this network allows fast communication between devices not related to running the model trains.

More devices means more traffic.


Every device that wants to talk waits a specified amount of time after the last message before attempting to send a message itself. After the wait time expires, another slice of time is used to determine priority: high priority devices get the first chance, low priority devices must wait longer before attempting a transmit.

A new digitrax DCC set contains several flat black telephone cables with plastic telephone plugs on the end. The booster/command station (either DCS100, DB150, or zephyr command station/booster) has 2 RJ type telephone jacks on the front or rear. The throttle also has a cable terminating in a telephone plug. The universal panel ( UP5)has two telephone jacks in the front. There may be a short piece of cable with a plastic plug on one end and colored wires on the other end (LT-1).

The DCS100/ DB150/zephyr command station is a computer. That DT100/ DT300/ DT400/ UT1 throttle is a computer. The decoder you just installed in your loco is really a computer. Arm sleeve tattoo ideas for guys DCC is all about computers. If you are familiar with computers, especially networked computers at your school or office, you are well on your way to understanding DCC.

Computers talk to each other through data communication lines. Typically these lines are similar to a telephone line – either a flat-ribbon cable like the line to your telephone set, or a thick cable like the one behind the wall into your telephone jack. In computer language, this type of wiring and the signals that travel through the wires are a local area network or LAN. You may not realize this, but there are industry standards which specify the details about what these signals do, which wires in the cable they travel through, what the colour of the wires should be, the type of connector plugs to use, and a whole bunch of other things. These standards are part of the LAN.

Digitrax DCC is a local area network that is not very different from a computer LAN. In fact, the standards are very similar. Except that, instead of calling their local area network a LAN, digitrax calls it a loconet that’s all the loconet is – a local area network. And that’s why you’ve got a whole bunch of stuff that looks like telephone cables, plugs, and jacks. We won’t get into the mysteries of what types of signals go down these wires – because we don’t have to. All we have to know is how to connect these components together. Awesome mens tattoos we’re more interested in installing those telephone cables/jacks so that we can get to running the trains. What we’ll do over the next few pages is to introduce you to some of these wiring standards, show you how to wire in the loconet, and, in the process, try to take some of the mystery out of this wiring.

If you visually connect the male plug to the female jack, you’ll see that the white wire of the male plug connects to the white wire of the female jack, the black wire connects to the black wire, the red to the red, the green to the green, the yellow to the yellow, the blue to the blue. This is sometimes referred to pin 1 to pin 1, pin 2 to pin 2, pin 3 to pin 3, pin 4 to pin 4, pin 5 to pin 5, pin 6 to pin 6 wiring – or pin 1 to pin 1 wiring to keep it short. It will help in troubleshooting if you always make sure that each coloured wire connects to its own colour. Also note that

The two outside wires, white and blue, each carry a copy of the master packets transmitted by the command station to the rails, are called RAIL SYNC. These two wires carry opposite polarity signals, and are transmitted differentially in the same cable, so RAIL SYNC can drive a booster feeding a power district hundreds, if not thousands of feet from the command station.

RAIL SYNC also allows you to power low current power draw devices, such as loconet input sensors (utility panels such as the UP5) or utility throttles without internal power sources. Devices such as the UR92 radio receiver draw too much current so they must be powered externally. Even so, it is advisable to power some utility panels with their own power supply,

Since the six conductor loconet cable is balanced, and the signal propagation is arranged in a manner to minimize RFI (radio frequency interference, loconet transmissions should not cause problems with radio and TV reception. It also minimizes the susceptibility of loconet to EMI from power tools and radio transmitters such as wireless phones or garage door openers.

The network becomes unstable at voltages less than about 7VDC. Awesome angel tattoos at the command station, with no other cables connected, you should measure 14 to 14.5VDC. If there are low voltages, disconnect all the cables and begin by reading the voltage, then connecting a cable, check the voltage, connect the next cable/device until you find the problem.

The NET indicator on the DCS100/DCS200 command station is a red LED that displays information about what the command station sees on loconet. When your loconet is wired and operating properly, the NET indicator will be on and flickers any time a valid loconet message is detected by the command station. The following table explains the various patterns for this indicator:

For large complex layouts, digitrax offers the LNRP loconet repeater. It allows you to create two loconets: one protected, one unprotected. The protected one is used to connect boosters, etc, while the unprotected network is used for throttles. Awesome guy tattoo ideas this protects the layout from a network crash, often caused during throttle connect/disconnect operations.

So, if you happen to crimp a male plug onto the end of a cable the wrong way, it won’t affect the operation of the loconet because the corresponding wire at the other end (blue – white, yellow – black, green – red) both have the same function. (it’s not necessary to understand what rail sync, ground, or loconet functions are.) however, we highly recommend that you make sure that pin 1 is connected to pin 1….. Pin 6 is connected to pin 6.

We’ll show you a little trick to help you keep that orientation when it comes to crimping on those male plugs– hold the plugs tab side down so you can sort of see the wires through the plastic. Hold the plug with the opening toward you, and as you slide the stripped ends of the cable into the plug, make sure that the blue wire is on the right side of the hole. Do this at both ends and you’re all set!

The two outside wires (pins 1 6) carry signals of opposite polarity (differential signalling) compared to the master system rail packets, this is called railsync. RailSync allows loconet boosters and other loconet devices to be connected anywhere along a cable run. This works even with cable runs of thousands of feet and in the presence of noise and interference.

LocoNet cables must be reliable and well made, or you may see intermittent connectivity and erratic operation on the layout. If areas of the layout exhibit intermittent issues, bad cables may be the problem. Bad cables on your layout can be very frustrating and are completely avoidable by simply testing each cable before you install it on the layout.

It’s easy to make loconet cables. If you would rather purchase them, ready-made 6-pin male RJ12 to RJ12 cables of various lengths are available from digitrax and other sources such as digikey and mouser. Unique tattoo designs for guys be sure to use 6-conductor and not the similar 4-conductor plugs and wires. If you purchase pre-made cables, make sure you test them as described below before using them.

RJ stands for registered jack – as in telephone jack – as registered with the federal communications commission (FCC) by the telephone industry when plastic modular components were developed in the 1950s/60s. Later on, as data communications technology developed, the telecommunications industry added to these standards. The RJ standards don’t refer to the physical size of the male plugs or the female jack. They refer to the way the jack is to be wired and what the wiring is to be used for.

To confuse things even more, the RJ standards specify the number of conductors (wires) going into the plug or jack and the number of positions available in the plug or jack to anchor these wires to. For example, the RJ12 loconet plugs and jacks we use are specified as RJ12 6p6c. Back of neck tattoos quotes that is, 6 positions are available to anchor the wires (the 6p). And 6 conductors (wires) can be wired into the plug or jack (the 6c). And all of this wiring is to be used for a local area network (LAN) – which we call the loconet.

• max number of devices? – that depends on the current draw in the loconet but that can be quite a technical subject. For modellers who use digitrax systems at home, they will never reach that limit. However, if you belong to a MR club with a large layout and many throttles in use, you can experience some problems. We’ve got some tips (insert link (content to be developed later) on how you can overcome these limitations).

The MS100 computer interface is designed to let an IBM compatible computer with RS232 communications port monitor digitrax loconet. The MS100 is a signal level translator between loconet and a 25 pin DB25 style RS-232 port. It is basically a dongle that plugs into the 25 pin RS-232 serial port, with an additional cable connecting to loconet.