Mikroe465

PICPLC16 v6
™
User manual
All MikroElektronika´s development systems represent irreplaceable tools for
programming and developing microcontroller-based devices. Carefully chosen
components and the use of machines of the last generation for mounting and
testing thereof are the best guarantee of high reliability of our devices. Due to
simple design, a large number of add-on modules and ready to use examples,
all our users, regardless of their experience, have the possibility to develop
their project in a fast and efficient way.
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TO OUR VALUED CUSTOMERS
I want to express my thanks to you for being interested in our products and for having confidence in
mikroElektronika.
The primary aim of our company is to design and produce high quality electronic products and to constantly
improve the performance thereof in order to better suit your needs.
The Microchip name and logo, the Microchip logo, Accuron, dsPIC, KeeLoq, microID, MPLAB, PIC, PICmicro, PICSTART, PRO MATE,
PowerSmart, rfPIC and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A and other countries.
DISCLAIMER
All the products owned by MikroElektronika are protected by copyright law and international copyright treaty.
Therefore, this manual is to be treated as any other copyright material. No part of this manual, including
product and software described herein, may be reproduced, stored in a retrieval system, translated or
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MikroElektronika provides this manual ‘as is’ without warranty of any kind, either expressed or implied,
including, but not limited to, the implied warranties or conditions of merchantability or fitness for a particular
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MikroElektronika shall assume no responsibility or liability for any errors, omissions and inaccuracies that may
appear in this manual. In no event shall MikroElektronika, its directors, officers, employees or distributors be
liable for any indirect, specific, incidental or consequential damages (including damages for loss of business
profits and business information, business interruption or any other pecuniary loss) arising out of the use
of this manual or product, even if MikroElektronika has been advised of the possibility of such damages.
MikroElektronika reserves the right to change information contained in this manual at any time without prior
notice, if necessary.
HIGH RISK ACTIVITIES
The products of MikroElektronika are not fault – tolerant nor designed, manufactured or intended for use or
resale as on – line control equipment in hazardous environments requiring fail – safe performance, such as
in the operation of nuclear facilities, aircraft navigation or communication systems, air traffic control, direct
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TRADEMARKS
The Mikroelektronika name and logo, the Mikroelektronika logo, mikroC, mikroC PRO, mikroBasic, mikro-
Basic PRO, mikroPascal, mikroPascal PRO, AVRflash, PICflash, dsPICprog, 18FJprog, PSOCprog, AVR-
prog, 8051prog, ARMflash, EasyPIC5, EasyPIC6, BigPIC5, BigPIC6, dsPIC PRO4, Easy8051B, EasyARM,
EasyAVR5, EasyAVR6, BigAVR2, EasydsPIC4A, EasyPSoC4, EasyVR Stamp LV18FJ, LV24-33A, LV32MX,
PIC32MX4 MultiMedia Board, PICPLC16, PICPLC8 PICPLC4, SmartGSM/GPRS, UNI-DS are trademarks
of Mikroelektronika. All other trademarks mentioned herein are property of their respective companies.
All other product and corporate names appearing in this manual may or may not be registered trademarks
or copyrights of their respective companies, and are only used for identification or explanation and to the
owners’ benefit, with no intent to infringe.
©MikroelektronikaTM
, 2010, All Rights Reserved.
Nebojsa Matic
General Manager

3
PICPLC16 v6 Development System
MikroElektronika
page
TABLE OF CONTENTS
Introduction to PICPLC16 v6 Development System ........................................................................ 4
Key Features .................................................................................................................................... 5
1.0. Connecting the System to a PC ................................................................................................ 6
2.0. Supported Microcontrollers ...................................................................................................... 7
3.0. On-board USB 2.0 PICflash with mikroICD Programmer ......................................................... 8
4.0. MikroICD (In-Circuit Debugger) ................................................................................................. 9
5.0 Power Supply ............................................................................................................................ 10
6.0 RS-232 Communication Module ............................................................................................... 11
7.0. RS-485 Communication Module ............................................................................................... 12
8.0. Ethernet Module ........................................................................................................................ 13
9.0. GSM Connector ........................................................................................................................ 14
10.0. A/D Converter Test Inputs ....................................................................................................... 15
11.0. Real-Time Clock (RTC) ........................................................................................................... 16
12.0. Relays and Optocouplers ....................................................................................................... 17
13.0. I/O Ports ..................................................................................................................................18

4 PICPLC16 v6 Development System
MikroElektronika
page
Introduction to PICPLC16 v6 Development System
The PICPLC16 v6™ development system provides a development environment for experimenting with industrial devices. Connection
between the development system and these devices is established by means of relays. In addition, the PICPLC16 v6 features
additional modules which also enable the microcontroller to be connected to external devices. The PICPLC16 v6 may be used as a
stand-alone controller which communicates to remote devices through communication modules. Numerous modules, such as RS-
232 communication module, real-time clock, ethernet controller, GSM module etc. are provided on the board and allow you to easily
experiment with your microcontroller.
Development system may be
used as a stand-alone controller
Development system for PIC
microcontroller based devices
ADC INPUT
ENABLED
ADC INPUT
ENABLED
Four inputs for testing A/D
coverter in 12-bit resolution
Built-in debugger for testing
program being executed in real
time at a hardware level
On-board USB 2.0 programmer
System specification:
Power supply: over the CN1 connector (12-22V AC or 16-30V DC)
Power consumption: 120mA when all on-board modules are off
Dimension: 26,5 x 22cm (10,4 x 8,6inch)
Weight: ~750g (1.65lbs)
Package contains:
Development system: PICPLC16 v6
CD: product CD with relevant software
Cables: USB cable
Documentation: Manuals for PICPLC16 v6, PICflash and mikroICD,
quick guide for installing USB drivers and electrical
schematic of the development system
ThePICflash™programprovidesacompletelistofallsupportedmicrocontrollers.
The latest version of this program with updated list of supported microcontrollers
can be downloaded from our website at www.mikroe.com

5
MikroElektronika
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1 3
2 6
5
12
15
16
20
8
Key Features
1. Connectors for optocouplers
2. Optocouplers
3. Power supply voltage regulator
4. Power supply connector CN1
5. On-board programmer with mikroICD support
6. On-board programmer’s USB connector
7. Jumpers for isolating the on-board programmer from the
development system
8. I/O port connectors
9. Microcontroller socket
10. Jumper for pull-up/pull-down resistor selection
11. DIP switch to enable pull-up/pull-down resistors
12. Connectors to link external devices with relays
13. DIP switches to enable/disable on-board modules
14. Relays
15. Real-time clock
16. Ethernet module
17. Connector for placing GSM antenna
18. 3.3V voltage regulator
19. Voltage reference source
20. A/D converter test inputs
21. Power supply voltage control
22. RS-232 communication module
23. RS-485 communication module
24. Connector for GSM module
25. Connectors for speaker and microphone
18
4
7
9
11
25
17 14 13
24
23
19 10
21
22

MikroElektronika
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1.0. Connecting the System to a PC
Step 1:
Follow the instructions provided in the relevant manuals and install the PICflash program and USB drivers from the product CD. USB
drivers are essential for the proper operation of the on-board programmer.
In case you already have one of the Mikroelektronika’s PIC compilers installed on your PC, there is no need to reinstall USB drivers
as they are already installed along with the compiler.
Step 2:
Prior to connecting the development system to a PC, it is necessary to connect it to the power supply source. Follow the instructions
given in figure 1-2 to establish this connection. You need two wires to be placed into the power supply connector and fixed by using
screws. Refer to figure 1-2 (2).
Step 3:
When the development system is connected to the power supply source, it is necessary to plug in a USB cable into the on-board USB
connector. Connection between the USB cable and the development system makes the on-board programmer to be connected to a
PC. Now it is possible to load a hex code from the PC into the microcontroller.
Step 4:
Turn on your development system by setting the POWER SUPPLY switch to the ON position. Two LEDs marked as POWER and USB
LINK will be automatically turned on indicating that your development system is ready to use. Use the on-board programmer and the
PICflash program to dump a code into the microcontroller and employ the system to test and develop your projects.
NOTE: Make sure the power supply source is connected. Otherwise, the on-board programmer cannot be enabled.
Figure 1-2: Connecting power supply source
1
Figure 1-1: Power supply
2 3
Power supply connector
2
1
Figure 1-3: Plugging in a USB cable into the development system

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2.0. Supported Microcontrollers
The PICPLC16 v6 development system comes with the PIC18F4520 microcontroller in DIP40 package. In case this microcontroller
doesn’t suit your needs, it is possible to replace it with another one. When choosing the appropriate replacement for the existing
microcontroller, the most important thing to pay attention to is the pinout.
Figure 2-2: DIP40 socket
Figure 2-1: Microcontroller in DIP40 package
Prior to plugging the microcontroller into the appropriate socket, make sure that the power supply is turned off. Figure 2-3 shows how to
correctly plug a microcontroller. Figure 1 shows an unoccupied DIP40 socket. Place one end of the microcontroller into the socket (Figure
2). Then put the microcontroller slowly down until all the pins thereof match the socket (Figure 3). Check again that everything is placed
correctly and press the microcontroller easily down until it is completely plugged into the socket (Figure 4).
Figure 2-3: Placing microcontroller into the socket
1 3 4
The existing microcontroller can
be replaced with another one in
DIP40 package

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3.0. On-board USB 2.0 PICflash Programmer with mikroICD Support
A programmer is a necessary tool when working with microcontrollers. The PICPLC16 v6 has an on-board PICflash with mikroICD
programmer which provides an interface between the microcontroller and the PC. The PICflash program is used for loading a .hex file
into the microcontroller. Figure 3-2 shows connection between the compiler, PICflash program and the microcontroller.
Figure 3-2: The process of programming
On the left side of the PICflash
program’s main window, there
is a number of options for
setting the operation of the
microcontroler to be used. A
numberofoptionswhichenable
the programming process
are provided on the right side
of the window. Positioned in
the bottom right corner of the
window, the Progress bar
enables you to monitor the
programming progress.
Write a program in one of the PIC
compilers and generate a .hex file;
Use the PICflash program to
select desired microcontroller to be
programmed;
Click the Write button to dump
the code into the microcontroller.
Bin.
Hex.
1110001001
0110100011
0111010000
1011011001
2FC23AA7
F43E0021A
DA67F0541
MCU
2
Write a code in one of the PIC compilers, generate
a .hex file, and employ the on-board programmer
to load the code into the microcontroller.
1
3
Compiling program
Load a hex code by
clicking the Load button
2
1
3
Figure 3-1: PICflash programmer
An LED marked as USB LINK
indicates the established connection
between the programmer and a PC
USB connector of B type
Reset button
Programmer’s chip

9
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The mikroICD debugger also offers functions such as running a program step by step (single stepping), pausing the program execution
to examine the state of currently active registers using breakpoints, tracking the values of some variables etc. The following example
illustrates a step-by-step program execution using the Step Over command.
NOTE: For more information on the mikroICD debugger refer to the mikroICD Debugger manual.
4.0. mikroICD (In-Circuit Debugger)
The mikroICD (In-Circuit Debugger) is an integral part of the on-board programmer. It is used for the purpose of testing and
debugging programs in real time. The process of testing and debugging is performed by monitoring the state of all registers within
the microcontroller while operating in real environment. The mikroICD software is integrated in all PIC compilers designed by
mikroElektronika (mikroBASIC PRO, mikroC PRO, mikroPASCAL PRO etc). As soon as the mikroICD debugger starts up, a window
called Watch Values, appears on the screen, Figure 4-1. The mikroICD debugger communicates to the microcontroller through the
microcontroller’s pins used for programming.
Step 2:
After the Step Over command
is executed, the microcontroller
will execute the 41st program
line. The next line to be
executed is highlighted in blue.
The state of registers being
changed by executing this
instruction may be viewed in
the Watch Values window.
Icon commands
A list of selected registers to be
monitored. The state of these registers
changes during the program execution,
which can be viewed in this window
A complete list of registers within the
microcontroller being programmed
Double click on the Value field
enables you to change data format
mikroICD debugger options:
Figure 4-1: Watch Values window
Start Debugger [F9]
Run/Pause Debugger [F6]
Stop Debugger [Ctrl+F2]
Step Into [F7]
Step Over [F8]
Step Out [Ctrl+F8]
Toggle Breakpoint [F5]
Show/Hide Breakpoints [Shift+F4]
Clear Breakpoints [Ctrl+Shift+F5]
Each of these commands is activated via
keyboard shortcuts or by clicking appropriate
icon within the Watch Values window.
During operation, the program line to be executed next is
highlighted in blue, while the breakpoints are highlighted in
red. The Run command executes the program in real time
until it encounters a breakpoint.
1
2
Step 1:
In this example the 41st
program line is highlighted in
blue, which means that it will
be executed next. The current
state of all registers within the
microcontroller can be viewed
in the mikroICD Watch Values
window.

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5.0. Power Supply
The PICPLC16 v6 development system is connected to the power supply source via the CN1 connector. The power supply voltage
can be either DC or AC. A DC power supply voltage can be in the range of 16V to 30V, whereas the AC power supply voltage can
range between 12V and 22V. Have in mind that the on-board programmer cannot operate without being connected to the power supply
source although it is connected to a PC via the USB cable.
Figure 5-1: Power supply
Figure 5-2: Power supply connection schematic
Power supply voltage
regulator
POWER SUPPLY switch
Power supply connector CN1

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6.0. RS-232 Communication Module
USART (Universal Synchronous/Asynchronous Receiver/Transmitter) is one of the most common ways of exchanging data between
the PC and peripheral units. The RS-232 serial communication is performed through CN4 and CN5 connectors and the microcontroller
USART module. There is one RS-232 port provided on the PICPLC16 v6. Use switches marked as RX232 and TX232 on the DIP
switch SW11 to enable this port. The microcontroller pins used for the RS-232 communication are marked as follows: RX - receive
data line and TX - transmit data line. Data rate goes up to 115 kbps.
In order to enable the USART module of the microcontroller to receive input signals which meet the RS-232 standard, it is necessary
to adjust voltage levels using an IC circuit such as (MAX232).
Figure 6-2: RS-232 module connection schematic
NOTE: Make sure that your microcontroller equipped with the USART module as it is not necessarily integrated in all PIC
microcontrollers.
Figure 6-1: RS-232 module
Port RS-232 is connected to the microcontroller
RS-232 connector

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The RS-485 communication is a communication standard primarily intended for the use in industrial applications. The main
features of this communication standard is the ability to exchange data between distant points (up to 1200 m) and high tolerance
to accompanying noise. The PICPLC16 v6 development system features a connector which enables devices using RS-485
communication to be linked. The ADM485 circuit acts as a transciever between an external device and the microcontroller. To
enable connection between the microcontroller and the RS-485 communication module, it is necessary to set switches 1, 2 and 3
on the DIP switch SW9 to the ON position.
Figure 7-1: RS-485 module
Figure 7-2: RS-485 module connection schematic
Connector for RS-485
communication
RS-485 communication is enabled via DIP switch SW9

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8.0. Ethernet Module
The PICPLC16 v6 development system features an ethernet module providing an interface between the microcontroller and LAN
(local area network). The ENC28J60 stand-alone controller enables ethernet communication on the development system. It is used
to transfer data from LAN to the microcontroller using serial communication. The 3.3V voltage is required for the operation of this
controller. To enable data to be transferred to the microcontroller powered with the 5V power supply voltage, it is necessary to adjust
these voltage levels by means of transceivers 74LVCC3245 and 74LVC1T45. To enable connection between the ethernet module and
the microcontroller, switches 1, 2 and 3 on the DIP switch SW10, as well as switches 4, 5 and 6 on the DIP switch SW9 should be set
to the ON position.
Figure 8-2: Ethernet module connection schematic
Figure 8-1: Ethernet module
Ethernet module
connector
Ethernet module is connected to the microcontroller via DIP switches SW9 and SW10

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9.0. GSM Connector
9.0. GSM Connector
Owing to a built-in connector for GSM module, the PICPLC16 v6 development system is capable of communicating with the outside
world using GSM network. A GM862-QUAD GSM module from Telit can be ordered with the development system. This module
features a slot for placing a SIM card as well as a connector for external antenna. For the GSM module to be connected to the
microcontroller, it is necessary to set switches 3-8 on the DIP switch SW11 to the ON position.
Figure 9-1: GSM connector Figure 9-2: GSM module
Figure 9-5: Microcontroller and GSM connector connection schematic
GSM module is connected to the microcontroller via DIP switch SW11
Figure 9-4: GSM module with antenna
In case that the GSM module is employed for
the audio communication, it is necessary to plug
in a speaker and a microphone into appropriate
connectors, as shown in Figure 9-3. In addition to
the audio signal transmission, the GSM module
can be used for sending data in accordance with
the GPRS standard used in mobile applications.
Figure 9-3: Audio connectors

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10.0.
10.0. A/D Converter Test Inputs
A/D Converter Test Inputs
An A/D converter is used for converting an analog signal into the appropriate digital value. A/D converter is linear, which means
that converted number is linearly dependent on the input voltage value. The MCP3204 circuit is used as an A/D converter on the
PICPLC16 v6 development system. Voltage to be converted into a 12-bit number is brought to the A/D converter input pins by
means of the MCP6284 operational amplifier. The result of conversion is transferred to the microcontroller by means of serial
communication. For the digital signal to be transferred to the microcontroller, it is necessary to set switches 4, 5, 6 and 7 on the
DIP switch SW9 to the ON position. In case that voltage reference is used during A/D conversion, it is necessary to select desired
voltage reference by means of DIP switch SW10. If the power supply voltage is used as a voltage reference, then switch 8 on the
DIP switch SW10 should be set to the ON position. If the 4.096V voltage is used as a voltage reference, the switch 7 on the DIP
switch SW10 should be set to the ON position.
Figure 10-1: A/D module
Figure 10-2: AD module and microcontroller connection schematic
A/D converter communicates to the microcontroller using SPI communication
A/D converter’s connector

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11.0. Real-Time Clock (RTC)
As a result of the built-in DS1307 circuit, the PICPLC16 v6 development system is capable of keeping the real time. The main features
of the real-time clock are as follows:
- providing information on seconds, minutes, hours, days in a week and dates including correction for a leap year
- I2
C serial interface
- automatic power-fail detection
- power consumption less than 500nA
A real-time clock is widely used in alarm devices, industrial controllers, consumer devices etc. The real-time clock provided on the
PICPLC16 v6 development system is used to generate an interrupt at pre-set time. In order to establish connection between the
microcontroller and the real-time clock it is necessary to set switches 4, 5 and 6 on the DIP switch SW10 to the ON position.
Figure 11-2: Real-time clock and microcontroller connection schematic
Figure11-1: Real-time clock
Quartz-crystal provides
accuracy of the clock signal
used by the real-time clock
3V battery enables the operation
of the real-time clock when the
power supply is off
Real-time clock is connected to the microcontroller via pins RC4, RC3 and RB0

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12.0. Relays and Optocouplers
12.0. Relays and Optocouplers
Industrial devices usually utilize more power than the microcontroller can provide via its I/O ports. To enable the microcontroller to be
connected to such devices, the development system is provided with 16 relays by means of which it is possible to provide up to 250V
power supply. Each relay has one normally-open (W0, W1...) and one normally-closed (NW0, NW1...) contact. Sixteen relays are
divided in four groups each consisting of four relays. Relays of one group are connected to one common contact. Accordingly, there
are COMA, COMB, COMC and COMD common contacts. Figure 12-3 illustrates the connection between one group of relays and the
relevant COMA common contact. In addition to relays, the development system also features optocouplers the function of which is to
galvanically isolate signals brought to the microcontroller inputs from industrial devices. As can be seen in Figure 12-3, optocouplers
are also linked to one common connector OCVCC.
Figure 12-3: Relays and optocouplers and microcontroller connection schematic
Optocouplers galvanically isolate microcontroller inputs from high voltage
Figure 12-1: Relays with relevant connectors Figure 12-2: Optocouplers with relevant connectors

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13.0.
13.0. Input/Output Ports
Input/Output Ports
Along the right side of the development system, there are four 10-pin connectors which are linked to the microcontroller’s I/O ports.
Microcontroller pins used for programming are not directly connected to the appropriate 10-pin connector CN2 (PORTB), but via a
multiplexer. DIP switches SW1-SW4 enable each connector pin to be connected to one pull-up/pull-down resistor. It depends on the
position of jumpers J5-J8 whether the port pins are to be connected to pull-up or pull-down resistors.
Figure 13-4: Port PORTB connection schematic
Figure 13-2: J6 in pull-down
position
Figure 13-3: J6 in pull-up
position
Jumper for pull-up/pull-
down resistor selection
Figure 13-1: I/O ports
DIP switch to enable pull-
up/pull-down resistor for
each port pin
PORTA/E 2x5 male connector
Additional module connected
to PORTB
Port PORTB pins are connected to pull-down resistors
Pull-up/pull-down resistors enable you to set the logic
level on all microcontroller’s input pins when they are
in idle state. This level depends on the position of the
pull-up/pull-down jumper J6. When this jumper is in
pull-up position, the input pins will be supplied with the
5V power supply voltage, which means that they will
be driven high (logic one (1)). When this jumper is in
pull-down position, the input pins will be supplied with
0V, i.e. they will be fed with a logic zero (0).
In order to provide some of the microcontroller pins
with a desired logic level, it is necessary to enable
connection between that pin and the resistor using the
appropriate DIP switch.
Refer to figure 13-4. Port PORTB pins are driven low
(0). It means that jumper J6 is in pull-down position,
whereas switches on the DIP switch SW2 are in the
ON position.

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