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Manual OC32/NG 

VPEB  

Control your Miniature World 

 

Page 36 of 48 

Version 1.0 – December 15

th

, 2017 

2017 Leon van Perlo  

 
6.3

 

Connecting the I/O Pins 

 

The loads to be driven by the OC32 are being connected to the connectors K5A and K5B. 
Each 20-pin socket accepts two 10-pin plugs. Each plug carries 8 signal wires plus Vp and 
GND 
The pin-out is given in figure 16 below. 
 
 
 
 
 
 
 
 
 
 
 
 
 

Fig 24: Pinout sockets K5A and K5B 

 

GND  00  01  02  03  04  05  06  07  Vp1(0..15)

GND  08  09  10  11  12  13  14  15  Vp1(0..15)

GND  16  17  18  19  20  21  22  23  Vp2(16..31)

GND  24  25  26  27  28  29  30  31  Vp2(16..31)

GND  00  01  02  03  04  05  06  07  Vp1(0..15)

GND  08  09  10  11  12  13  14  15  Vp1(0..15)

GND  16  17  18  19  20  21  22  23  Vp2(16..31)

GND  24  25  26  27  28  29  30  31  Vp2(16..31)

Control your Miniature World   

VPEB  

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 DCC option)

 

 

3.2

 

LED indicators 

 
The functions of the LEDs on the print (green and orange) depend on the firmware. Refer to 
the OC32 firmware manual for the latest details. Standard function can be changed by 
configuration by the user. 
 
With firmware 3.0.0 the standard functions are: 
 

Starting up: 

 

Orange: is lit during the starting sequence of the OC32 (if the power is switched on). 
This takes about 0.25 to 0.5 seconds

 

 

Normal operation: 

 

Green: Flashes regularly 1 second intermittent to show that the module is active and 
the processor is operating normally; 

 

Orange: Flashes shortly when the OC32 receives a correctly addressed message 
(Rs232, RS485 or DCC). 

 

Bootloader: 

When the bootloader is active (see firmware manual) both LEDs are lit continuously.  

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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