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Manual OC32/NG 

VPEB  

Control your Miniature World 

 

Page 46 of 48 

Version 1.0 – December 15

th

, 2017 

2017 Leon van Perlo  

9

 

Installation of the U485 

 
The U485 is a USB to RS485 converter designed to be used with the OC32. The U485 
connects up to 96 OC32 modules to a single USB port. 
 
To use this interface it is of course necessary that your PC is equipped with a USB port. 
The U485 is compatible with the following operating systems: 

 

Windows 98 

 

Windows ME 

 

Windows XP 

 

Windows Vista 

 

Windows 7 

 

Windows 8, 8.1 

 

Windows 10 

 

Linux 

 

MAC OS/X 

Windows from Vista onwards and Linux from kernel 2.6.31 usually recognize the U485 and 
automatically install the appropriate driver software if your PC is connected to the Internet. 
So effectively, the only thing you have to do is plug in and wait a minute for the driver to 
install. 
 
For the other operating systems, the correct drivers must be installed before you plug the 
USB interface into the PC. In case it does not work automatically with Vista or later, unplug 
the U485, manually install the correct driver and try again. 
 
The latest driver can be downloaded (for free) from the website of Future Technology 
Devices: http://www.ftdichip.com/Drivers/VCP.htm 
The easiest way is to use the "setup executable for default VID and PID values". 
You can also find the driver on the Dinamo Users Group website. 
 
The latest version of the driver is not guaranteed to work under Windows 2000, Windows 
98 or Windows ME. However, there is an older version that can be downloaded and should 
work in these OS versions. 
 
After the driver is installed you can plug the U485 into the USB port of your PC. 
The first time the U485 is inserted, the PC will load/configure the driver for the U485 and 
create a virtual COM port. 
 
When everything went right you will now find an additional COM port in Control Panel -> 
System -> Hardware -> Device Manager -> Ports (the exact path depends on your OS 
version and language). Make a note of the COM port number. You will need this later to 
make the right settings in the software. 
 
The U485 is now ready for use. 
 
On the U485 there are two LEDs that have the following function: 

 

Green: The U485 receives data from the RS485 bus 

 

Orange: The U485 sends data to the RS485 bus 

Note the U485 can be plugged directly in a PC USB port. Should this not be the case 
because of physical limitations, you can use a USB A-A extension cable. Should you need to 
do this, keep this cable short (less than 2 meters). The USB interface is susceptible to 
noise (which is usually extensively available in a model railroad environment), while the RS485 
interface is highly immune. So bridge the distance with RS485 (after the U485) not by USB! 

Control your Miniature World   

VPEB  

Manual OC32/NG 

2017 Leon van Perlo 

Version 1.0 – December 15

th

, 2017 

Page 3 of 48 

Preface / Reading Guide 

 
This manual describes the OC32/NG, which is an upgraded version of the original OC32. 
Although there are major differences between the OC32 and the OC32/NG, the /NG does 
not offer new functions, since all functions are made in software and the OC32 and the 
OC32/NG run 100% identical software. The OC32/NG however integrates the options 
previously offered by the OC32/DS32 combination and makes the system much easier to 
install and easier to adapt. 
 
This manual describes only the “hardware” OC32 Rev10 (OC32/NG). Since the firmware and 
software is 100% identical to the firmware for the OC32 (Rev00-Rev04), software 
capabilities are described in a separate manual. 
In this manual we will use both names OC32 and OC32/NG. When we write ‘OC32’, we mean 
‘any version of the OC32’. Where we write ‘OC32/NG’ we specifically mean the /NG version.  
 
The OC32 is a product with many possibilities. These extensive capabilities make the module 
very attractive: in fact you can use the OC32 to control (almost) any type of accessory on 
your miniature world (so basically everything except the trains and cars themselves). 
Without the need to buy other specific electronics, the OC32 can do it all. This versatility 
has a downside: Beginners, electronically less savvy users, face the risk of losing the 
overview at first. Therefore, this guide attempts to structure information with the above in 
mind. 
 
Each chapter covers a specific sub-topic, eg "Power Supply", "Connecting Devices" or 
"Network Connection" and usually begins with information that is relevant for each user. As 
the chapter progresses subjects are touched which may require more specialist knowledge 
or more effort to understand. As a reading-aid you find a colored bar in the margin, and the 
black&white spectators will note that the bars have a different width: 
 
Green   Novice: With these sections you should be able to get the basic functions working. 

It offers no extensive choices, clever savings or complex combinations. 

Blue  

Advanced level; Requires basic knowledge of electronics, some user-level experience 
with PC software, some logic thinking or a combination hereof. It requires you to 
make some choices and therefore you should be able to judge the benefits and 
drawbacks in your specific situation. In principle everyone should be able to practice 
this, however it may not be wise for everyone to start with this immediately.  

Orange  Expert level: Requires reasonable to good knowledje of electronics, logic thinking 

capabilities, some programming skills or a combination of these. What is described 
in these sections can lead to damage to the electronics or other devices if it is not 
done correctly. So practice only if you fully understand what you are doing.  

 
Should you consider yourself a “novice” and electronically limited skilled, or just looking for 
the easiest start, skip the blue and orange marked sections at first. If the basics work you 
can always start the more advanced levels later. 
 
The OC32 is supported through the Dinamo Users Portal. You find the portal at 

http://www.dinamousers.net

 

The portal contains a “wiki” with quite some additional information, such as: 
 

 

Answers to Frequently Asked Questions 

 

Software and firmware updates 

 

A forum you can use for advice and to get your questions answered. 

 
We urgently request you to use our support channels in the above order before personally 
contacting VPEB. 

 
Enjoy! 

Summary of Contents for OC32/NG

Page 1: ...r 15 th 2017 2017 Leon van Perlo This page is intentionally left blank Author Leon J A van Perlo Version 1 0 Date December 15 th 2017 OC32 NG Manual VPEBVan Perlo Elektronica Besturingstechniek VPEBVa...

Page 2: ...y information contained herein may not be copied or distributed in whole or in parts in whatever form without the explicit written approval of the original author The making of copies and prints by us...

Page 3: ...nctions since all functions are made in software and the OC32 and the OC32 NG run 100 identical software The OC32 NG however integrates the options previously offered by the OC32 DS32 combination and...

Page 4: ...rivers 500mA TBD62083 31 6 1 2 Source Drivers 500mA TBD62783 31 6 1 3 Sink and Source Drivers TBD62083 TBD62783 32 6 1 4 Resistor Array 5V outputs 32 6 1 5 OC32 ADM SI 4 8A power sink driver 33 6 1 6...

Page 5: ...array A resistor array is the preferred choice if the input port s are to be activated by a push button or the contacts of a relay A resistor array can also be used if the event input is to be activa...

Page 6: ...protocol is extremely simple just a few characters for a control command and control is unidirectional The OC32 can send command to the external Device but the external Device cannot send anything ba...

Page 7: ...ptocoupler between both systems Output Voltage V Rs k 6 1 0 7 5 2 4 9 3 9 12 6 8 15 10 18 12 24 18 Q x GND Extern systeem 4k7 Rs Fig 40 External system with Voltage conversion Table 2 Series resistor...

Page 8: ...the user So configuration needs to be done through one of the serial interfaces 1 The DCC Interface can also be added afterwards by the user All components needed are through hole so not SMD You need...

Page 9: ...y goes back into the idle position Take care some relays are polarity sensitive It is important to connect the right pole to Vp and to the OC32 output The power supplied by Vp needs to match the volta...

Page 10: ...anual OC32 NG 2017 Leon van Perlo Version 1 0 December 15 th 2017 Page 39 of 48 6 4 6 Decouplers OC32 I O Pin OC32 ADM SI 4 8A Sink Driver Solenoids may draw up to 1 5A or more That is too much for th...

Page 11: ...t SMD types also Fig 28 Connecting LEDs antiparallel in 5V mode Q x 1 Q x Q x 1 Q x Fig 29 Connecting LEDs antiparallel in 500mA mode Vp Rv Q x 1 Q x Rv Vp Rv Q x 1 Q x Rv Fig 30 LEDs on the barriers...

Page 12: ...n like decouplers turnout coils and motors Below you find a number of examples of devices to be found in the miniature world are presented 6 4 1 LED s with common anode OC32 I O Pin 500mA Sink Driver...

Page 13: ...Manual OC32 NG 2017 Leon van Perlo Version 1 0 December 15 th 2017 Page 13 of 48 Reset jumper Only used to start the bootloader RS485 Termination jumpers Power jumpers DCC Low pass jumper only with DC...

Page 14: ...wo power groups on the OC32 NG when using Sink Drivers the number of different power supplies is virtually unlimited The load is connected between the plus pole of the power supply and the output of t...

Page 15: ...is the GND of the communications port that your PC uses to control the layout The 0V GND as stated above of your miniature world has to be connected to the GND connection of the OC32 All points in fig...

Page 16: ...nterface is hardly ever needed it has been removed to protect the OC32 from unintended errors Control your Miniature World VPEB Manual OC32 NG 2017 Leon van Perlo Version 1 0 December 15 th 2017 Page...

Page 17: ...ex situations like 3 LEDs on the barrier of an automatic railroad crossing AHOB which are driven with two outputs and two wires Control your Miniature World VPEB Manual OC32 NG 2017 Leon van Perlo Ver...

Page 18: ...he examples of section 6 4 There is explained which driver you need for specific types of devices 6 1 1 Sink Drivers 500mA TBD62083 This is the default driver delivered with the OC32 NG module A load...

Page 19: ...nel Full H bridge When changing drivers please observe the following Remove and install drivers only when power is OFF Remove IC s carefully without excessively bending pins Install either regular dri...

Page 20: ...PC Table 1 below shows which settings of the dip switch correspond to which address For the record this is the standard numbering starting from 0 If your software starts numbering from 1 onwards you...

Page 21: ...extended addressing shall also be supported by your software When extended addressing used the address is no longer selected by the DIPswitches but instead by a configuration setting in the OC32 flash...

Page 22: ...connectors both the one on the OC32 and on the U485 have the same pin layout so pin 1 connects to 1 pin 2 to 2 and if applicable pin 3 to 3 The whole will look like the one below figure 12 Fig 11 Term...

Page 23: ...al converter is limited and therefore there may be a limitation to the number of modules you can connect this way Up to 10 units should normally work fine If you want to connect more modules than your...

Page 24: ...ultiple OC32 NG s Other options Of course you can combine options 1 and 2 as described above Since the two RJ45 s and the 3 pole connector are electrically connected effectively every OC32 NG can be u...

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