INDUSTRIAL SHIELDS INDUSTRIAL SHIELDS 006001000200 PLC Programmer User Manual

GPRS / GSM CONTROLLER 21 I/Os
PLUS
GPRS/GSM Controller User Guide:
GPRS/GSM Controller User
Guide
Revised, May 2019
Preface
This User Guide is been implemented by Boot & Work, S.L. working
under the name Industrial Shields.
Purpose of the manual
The information contained in this manual can be used as a reference to operating, to
functions, and to the technical data of the signal modules, power supply modules and
interface modules.
Intended Audience
This User Guide is intended for the following audience:




Persons in charge of introducing automation devices.
Persons who design automation systems.
Persons who install or connect automation devices.
Persons who manage working automation installation.
Warnings:




Unused pins should not be connected. Ignoring the directive may damage the
controller.
Improper use of this product may severely damage the controller.
Refer to the controller’s User Guide regarding wiring considerations.
Before using this product, it is the responsibility of the user to read the product’s User
Guide and all accompanying documentation.
Application Considerations and Warranty
Read and Understand this Manual
Please read and understand this manual before using the product. Please consult your
comments or questions to Industrial Shields before using the product.
Application Consideration
THE PRODUCTS CONTAINED IN THIS DOCUMENT ARE NOT SAFETY RATED.
THEY SHOULD NOT BE RELIED UPON AS A SAFETY COMPONENT OR
PROTECTIVE DEVICE FOR ENSURING SAFETY OF PERSONS, AS THEY ARE
NOT RATED OR DESSIGNED FOR SUCH PURPOSES.
Please know and observe all prohibitions of use applicable to the products.
FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY
WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESSIGNED
TO ADDRESS THE RISKS, NEVER USE THE INDUSTRIAL SHIELDS PRODUCTS.
NEVER USE THE INDUSTRIAL SHIELDS PRODUCTS BEFORE THEY ARE
PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.
Industrial Shields shall not be responsible for conformity with any codes, regulations or
standards that apply to the combination of products in the customer’s application or use
of the product.
The following are some examples of applications for which particular attention must be
given. This is not intended to be an exhaustive list of all possible uses of the products,
nor is it intended to imply that the uses may be suitable for the products:



Systems, machines, and equipment that could present a risk to life or property.
Nuclear energy control systems, combustion systems, railroad systems,
aviation systems, medical equipment, amusement machines, vehicles, safety
equipment, and installation subject to separate industry or government
regulations.
Outdoor use, uses involving potential chemical contamination or electrical
interference, or conditions or uses not described in this document.
At the customer’s request, INDUSTRIAL SHIELDS will provide applicable third party
certification documents identifying ratings and limitations of use that apply to the
products. This information by itself is not sufficient for a complete determination of the
suitability of the products in combination with the system, machine, end product, or
other application or use.
Disclaimers
Weights and Dimensions
Dimensions and weights are nominal and they are not used for manufacturing
purposes, even when tolerances are shown.
Performance Data
The performance data given in this manual is provided as a guide for the user in
determining suitability and does not constitute a warranty. It may represent the result of
INDUSTRIAL SHIELDS’s test conditions, and the users most correlate it to actual
application requirements. Actual performance is subject to the INDUSTRIAL SHIELDS
Warranty and Limitations of Liability.
Change in Specifications
Product specifications and accessories may be changed at any time based on
improvements and other reasons.
It is our practice to change model numbers when features are changed, or published
ratings or when significant construction changes are made. However, some
specifications of the products may be changed without any notice. When in doubt,
special numbers may be assigned to fix or stablish key specifications for your
application on your request. Please consult with your INDUSTRIAL SHIELDS
representative at any time to confirm actual specifications of purchased products.
Errors and Omissions
The information in this document has been carefully checked and is believed to be
accurate; however, no responsibility is assumed for clerical, typographical, or
proofreading errors, or omissions.
Warranty and Limitations of Liability
Warranty
Industrial Shields’s exclusive warranty is that the products are free from defects in
materials and workmanship for a period of one year (or other period if specified) from
date of sale by Industrial Shields.
INDUSTRIAL SHIELDS MAKES NO REPRESENTATION OR WARRANTY,
EXPRESSED OR IMPLIED, REGARDING MERCHANABILITY, NONINFRINGEMENT, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS.
ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE
HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE
REQUIREMENTS OF THEIR INTENDED USE. INDUSTRIAL SHIELDS DISCLAIMS
ALL OTHER WARRANTIES, EXPRESS OR IMPLIED
Limitations of Liability
INDUSTRIAL SHIELDS SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT,
OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR COMERCIAL LOSS IN
ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS
BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.
IN NO EVENT SHALL INDUSTRIAL SHIELDS BE RESPONISBLE FOR WARRANTY,
REPAIR OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS INDUSTRIAL
SHIELDS’S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY
HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT SUBJECT TO
CONTAMINATION, ABUSE, MISUSE, OR INAPPROPIATE MODIFICATION OR
REPAIR.
Table of Contents
General Description GPRS / GSM CONTROLLER 21 PLUS............................. 10
Zone - Nomenclature ...................................................................................................... 10
Zone Distribution............................................................................................................. 11
A Zone Features............................................................................................................... 11
Mechanical dimension .................................................................................................... 11
General Features ............................................................................................................. 12
Technical Specifications: ........................................................................................... 13
General Specifications: .................................................................................................... 13
Performance Specification: ............................................................................................. 13
Precautions................................................................................................................ 14
Arduino Board ................................................................................................................. 14
Intended Audience .......................................................................................................... 14
General Precautions ........................................................................................................ 14
Software interface ..................................................................................................... 14
How to connect PLC Arduino to PC ........................................................................... 18
How to connect PLC to power supply ....................................................................... 19
M-duino Family Pinout .............................................................................................. 20
A Zone connection .......................................................................................................... 20
B Zone (Analog Shield) .................................................................................................... 22
Switch Configuration ................................................................................................. 23
A Zone: Communications ................................................................................................ 23
Analog Shields ................................................................................................................. 25
GPRS/GPS I/Os 5V pins ............................................................................................. 25
I2C pins – SDA/SCL .......................................................................................................... 26
Serial 0 – RX0/TX0 ........................................................................................................... 26
Serial 1 – RX1/TX1 ........................................................................................................... 27
SPI – MISO/MOSI/SCK ..................................................................................................... 27
Pin 3 ................................................................................................................................. 27
Pin 2 ................................................................................................................................. 28
A Zone Features: Communications & RTC & uSD.................................................. 29
RS-232 ............................................................................................................................. 29
RS-485 ............................................................................................................................. 29
I2C.................................................................................................................................... 29
SPI .................................................................................................................................... 30
TTL ................................................................................................................................... 30
Ethernet........................................................................................................................... 31
RTC................................................................................................................................... 31
uSD .................................................................................................................................. 31
GPRS/GSM ....................................................................................................................... 32
I/O technical details: ............................................................................................. 34
Typical Connections .............................................................................................. 36
Connector details: ................................................................................................. 40
Mechanical Characteristics ................................................................................... 41
General Description GPRS / GSM CONTROLLER 21 PLUS
Zone - Nomenclature
The nomenclature shown in this point will be used in the whole User Guide, so it is
important to understand this nomenclature.
B ZONE
A ZONE
A ZONE
B ZONE
The nomenclature to differentiate the zones is based on the Alphabet, being A the
shield from below and D the shield from above. Having a B and a C in the middle of
them. It has 2 zones (A, B):
B ZONE
A ZONE

The inputs in the zone B are named I0.X, being X any number suitable in the
Shield. Outputs are named as Q0.X and relays as R0.X
Zone Distribution
A Zone Features
Shield
Communication
Shield
A Zone
(1x) Ethernet
(1x) USB
(1x) I2C
(3x) TTL
(1x) RS-232
(1x) HALF/FULL Duplex RS-485
(1x) SPI external Port
(1x) RTC
(1x) uSD Socket
(1x) GPRS/GSM
Mechanical dimension
2.
General Features
CONECTABLE PLC ARDUINO 24Vcc M-DUINO
MODEL TYPE
GPRS/GSM Controller General Spec.
Input Voltage
12 to 24Vdc
I max.
Size
Clock Speed
Flash Memory
SRAM
EEPROM
Communications
1.5A
USB consideration!
An/Dig Input 10bit
(0-10Vcc)
Digital Isolated Input (24Vcc)
* Interrupt isolated Input HS
(24Vcc)
Analog Output 8bit
(0-10Vcc)
Digital Isolated Output (24Vcc)
Digital Isolated Output Relay
PWM Isolated Output 8bit
(24Vcc)
101x119.5x70.1
Fuse protection (2.5A)
Polarity protection
101x119.5x119.3
16MHz
256KB of which 8KB used by bootloader
8KB
4KB
I2C – Ethernet Port – USB – GPRS – RS485 – RS232 -- SPI –
(2x) Rx, Tx (Arduino pins)
Only meant for uploading or debugging, not always connected
as a serial in a project!
0 to 10V
Input Impedance: 39K
Separated PCB ground
7 to 24Vdc
I min: 2 to 12 mA
Galvanic Isolation
Max232-Max485-W5500Sim800L
Cannot be working in a final
application
7 to 24Vdc
I min: 2 to 12 mA
Galvanic Isolation
0 to 10Vdc
I max: 20 mA
Separated PCB ground
5 to 24Vdc
I max: 70 mA
Galvanic Isolation
Diode Protected for Relay
220V Vac
I max: 5A
Galvanic Isolation
Diode protected for Relay
5 to 24Vdc
I max: 70 mA
Galvanic Isolation
Diode Protected for Relay
I2C - 127 elements - Serial Port RS232/RS485/GPRS
Expandability
* By using this type of signal can no longer use Digital signal (24Vdc)
Imax 24Vdc: 410 mA
Technical Specifications:
General Specifications:
Item
M-DUINO B ZONE
Power supply
voltage
DC power supply
Operating
voltage range
DC power supply
11.4 to 25.4Vdc
Power
consumption
DC power supply
30VAC max.
External
power supply
12 to 24Vdc
Power supply
voltage
24Vdc
Power supply
output capacity
700Ma
Insulation resistance
20MΩ min.at 500Vdc between the AC terminals and the protective earth terminal.
Dielectric strength
2.300 VAC at 50/60 Hz for one minute with a leakage current of 10mA max. Between all the
external AC terminals and the protective ground terminal.
Shock resistance
80m/s2 in the X, Y and Z direction 2 times each.
Ambient temperature (operating)
Ambient humidity (operating)
0º to 45ºC
10% to 90% (no condensation)
Ambient environment (operating)
With no corrosive gas
Ambient temperature (storage)
-20º to 60ºC
Power supply holding time
2ms min.
Weight
465g max.
Performance Specification:
Arduino Board
ARDUINO MEGA 2560
Control method
Stored program method
I/O control method
Programming language
Combination of the cyclic scan and immediate refresh processing methods.
Arduino IDE. Based on wiring (Wiring is an Open Source electronics platform composed of a
programming language. “similar to the C”. http://arduino.cc/en/Tutorial/HomePage
Microcontroller
ATmega2560
Flash Memory
256KB of which 8KB are used by the bootloader
Program capacity (SRAM)
8KB
EEPROM
4KB
Clock Speed
16MHz
Clock Speed
16MHz
Precautions
Read this manual before attempting to use the GPRS/GSM 21 PLUS PLC and follow its
descriptions for reference during operation.
Arduino Board
The GPRS/GSM Controller includes an Arduino Mega Board as controller.
Intended Audience
This manual is intended for technicians, which must have knowledge on electrical systems.
General Precautions
The user must operate M-Duino according to the performance specifications described in this
manual.
Before using the GPRS/GSM Controller under different conditions from what has been specified
in this manual or integrating GPRS/GSM Controller to nuclear control systems, railroad systems,
aviation systems, vehicles, combustion systems, medical equipment, amusement machines,
safety equipment and other systems, machines, and equipment that may have a serious
influence on lives and property if used improperly, consult your INDUSTRIAL SHIELDS
representative. Ensure that the rating and performance characteristics of GPRS/GSM Controller
are sufficient for the systems, machines, and equipment, and be sure to provide the systems,
machines, and equipment double safety mechanisms. This manual provides information for
programming and operating the GPRS/GSM 21 PLUS Controller.
Software interface
Industrial Shields PLC are programmed using Arduino IDE, which is a software based on the C
language. They can also be programmed using directly C but it is much easier working with
Arduino IDE as it provides lots of libraries that helps in the programming.
Industrial Shields provides boards for programming the PLCs much easier. Basically it is no
needed to define the pins and if that pins are inputs or outputs. Everything is set up
automatically if using the boards.
In order to install Industrial Shields boards, these are the steps that must be followed.
Requirements:
Arduino IDE 1.8.0 or above (better to have always the latest version).
Steps:
1. Open Arduino IDE and go to: “File -> Preferences” located in the top left corner.
2. In Additional Boards Manager URLs write the following:
http://apps.industrialshields.com/main/arduino/boards/package_industrialshields_index.json
3. Press OK to save the changes.
4. Go to: Tools -> Board: … -> Boards Manager
5. Search for “industrialshields” on the browser.
6. Click install (selecting the latest version).
Following these steps you will be able to see now the Industrial Shields Boards:
Once it is selected the Ardbox Family or M-Duino family an extra option will appear on Tools:
There, it can be selected the exact model for every family.
In this case, the GPRS/GSM Controller uses the MDuino 21+ model, as you can see in the
following image:
Also there are some examples of programming in File -> Examples -> M-Duino Family.
Furthermore there are some extra libraries that can be found in Industrial Shields github.
https://github.com/IndustrialShields/
How to connect PLC Arduino to PC
-
Connect USB port from PLC to PC.
NOTE:
M-Duino Family uses USB-B cable.
-
Open Arduino IDE interface:
-
Select Industrial Shields boards -> M-Duino Family
-
Select the correct M-Duino Board (M-Duino 21+).
-
Select correct port.
How to connect PLC to power supply
-
M-Duino Family PLCs are 12-24Vdc supplied. IMPORTANT: The polarity IS NOT
REVERSAL!
-
Make sure that the live and GND connector of the power supply match the PLC.
-
Make sure that the power supply mains output is not higher than 24Vdc.
-
Suggested power suppliers
* Not recommended for industrial applications. The
Jack connector needs to be removed and use the live
and GND connectors.
M-duino Family Pinout
A Zone connection
Base
(common unit)
Arduino Pin
SCL
SDA
RX0
TX0
RX1*
TX1*
TX
RX
ZY+
BA+
PIN3
50 SO
51 SI
52 SCK
Reset
Vin5
NC
GND
GND
24Vdc
21
20
1
0
19
18
16
17
3
50
51
52
Reset
Vin5
NC
-
Function
M-Duino
Connector
A Zone
Configuration Switch* (see section 8 for
configuring the communications.
Enabling communications disables some
I/Os)
I2C/SS
I2C/SS
RX0/SS
TX0/SS
RX1/SS
TX1/SS
RX2(serial 2)
TX2(serial 2)
RS485
RS485
RS485
RS485
Arduino Pin
SPI
SPI
SPI
SPI
5V
Not Connected
Gnd
Gnd
Power Supply
Rx1/Tx1 * Pins used for the GPRS module
Communication Pins
Power supply connectors
(24Vdc – GND)
SS: Chip Select pins. These pins can act as TTL, so they can work for the Chip Select pin of any device.
Base
(common unit)
M-Duino
Connector
Arduino Pin
Function
A Zone
AREF
IOREF2
IOREF1
7Vdc
GND
3.3Vdc
GND
5Vdc
GND
AREF
IOREF2
IOREF1
7Vdc
GND
3.3Vdc
GND
5Vdc
GND
Arduino PIN
Arduino PIN
Arduino PIN
GND
Arduino PIN
GND
GND
Ethernet
Connector
Arduino
Reset button
Power
USB programmer
connector
Autoreset
*NOTE: Autoreset. Arduino mega has auto reset when using serial communication code. Set switch to OFF when using
serial communication. When uploading code to Arduino Mega set switch to ON.
B Zone (Analog Shield)
M-Duino
Connector
Arduino Pin
Function
B Zone
I0.12
I0.11
I0.10
I0.9
I0.8
I0.7
(-)I0.6/INT1
I0.6/INT11
NC
NC
(-)I0.4
I0.4
(-)I0.3
I0.3
(-)I0.2
I0.2
(-)I0.1
I0.1
(-)I0.0
I0.0
59
58
57
56
55
54
3
NC
26
25
24
23
22
Analog/ Digital In
Analog/ Digital In
Analog/ Digital In
Analog/ Digital In
Analog/ Digital In
Analog/ Digital In
GND I0.6
Interrupt 1 In
Not Connected
Not Connected
GND I0.4
Digital Input
GND I0.3
Digital Input
GND I0.2
Digital Input
GND I0.1
Digital Input
GND I0.0
Digital Input
Analog/Digital Inputs
Interrupt Inputs (isolated)
Digital Inputs (isolated)
Top Zone
Led indicator I/Os state
GND
A0.71
A0.61
A0.51
Q/Vdc
COM(-)
Q0.71
Q0.61
Q0.51
Q0.4
Q0.3
Q0.2
Q0.1
Q0.0
GND
6
5
4
6
5
4
40
39
38
37
36
Function
Arduino Pin
M-Duino
Connector
B Zone
GND
Analog Out
Analog Out
Analog Out
External Isolated Out Vdc
External Isolated Out GND
Digital/PWM Out
Digital/PWM Out
Digital/PWM Out
Digital Out
Digital Out
Digital Out
Digital Out
Digital Out
Configuration Switch*
(see section 8 to select the correct
configuration for outputs).
Analog Outputs
Voltage Supply/Reference for
Digital/PWM Outputs (isolated)
PWM/Digital Outputs
Relay Shield
1 See section 8 to select suitable switch configuration for enable these connections.
Switch Configuration
A Zone: Communications
LEFT ZONE
Switch
Analog Shield
ON
OFF
B ZONE
Pin 3/I0.6
I0.1
Not Connected
NC
uSD & RS-485
D53(SD)
FD RS-485 HD
HD
Pin 3
NC
SD
FD
4. SCL/I2.6: ALWAYS AT OFF POSITION. On a GPRS/GSM Controller this switch is not
connected.
3. SDA/I2.5: ALWAYS AT OFF POSITION. On a GPRS/GSM Controller this switch is not
connected.
2. RX1/I1.6: ALWAYS AT OFF POSITION. On a GPRS/GSM Controller this switch is not
connected.
1. TX1/I1.5: ALWAYS AT OFF POSITION. On a GPRS/GSM Controller this switch is not
connected.
4. Pin 3/I0.6: Choosing between Pin 3 or the input I0.6. If this switch is ON, it enables
the I0.6 input and disables the Pin 3. If this switch is OFF, it enables Pin 3 and disables
I0.6.
3. Pin 2/I0.5: ALWAYS AT OFF POSITION. Pin 2 and I0.5 Are used by the Sim800L
module (The GPRS/GSM Module).
2. D53(SD): ALWAYS AT OFF POSITION. On a GPRS/GSM Controller this switch allows
the uSD storage, if this switch is ON, it does not enalbe any pin.
1. FD RS-485 HD: Choosing between FD or HF. If this switch is ON, it enables the Half
Duplex (HD) option and disables the FD. If this switch is OFF, it enables Full Duplex (FD)
and disables HD.
LEFT ZONE
SWITCH
ON
NC
NC
RTC SCL
RTC
RTC SDA
RTC
OFF
-
1. RTC SDA: This switch enables the communication to communicate with the RTC
using I2C. Having this switch in ON mode it actives this communication,
whereas if it is in OFF mode it disables the I2C to reach the RTC.
2. RTC SCL: This switch enables the communication to communicate with the RTC
using I2C. Having this switch in ON mode it actives this communication,
whereas if it is in OFF mode it disables the I2C to reach the RTC.
3. NC: Not connected. This switch is not connected to anything, it doesn’t matter
if it is in ON mode or OFF mode.
4. NC: Not connected. This switch is not connected to anything, it doesn’t matter
if it is in ON mode or OFF mode.
Analog Shields
B ZONE
SWITCH
ON OFF
NC
Q0.7
Q0.7 A0.7
Q0.6
Q0.6 A0.6
Q0.5
Q0.5 A0.5
For the Analog Shield if a switch is set to ON, it can only act as Digital Output. If it is set to OFF
it can only act as an Analog Output.
If it is desired to use a Digital Output the pin must be set to ON and the pin that will provide
this digital output is represented with Q0.X, being X any number of the tables above.
If it is desired to use an Analog Output the pin must be set to OFF and the pin that will provide
this analog output is represented with A0.X, being X any number of the tables above.
GPRS/GPS I/Os 5V pins
The GPRS/GSM Controller has some of the Mega board pins available. These pins can be
programmed according to Arduino features such as I/Os operating at 5V or any additional
features present in the pins (for example I2C communication in pins SCL and SDA). As this pins
are directly connected to the Arduino Mega board they are not as well protect as the normal
inputs. These pins are mainly meant to be used as prototyping.
The Arduino board available pins are summarized in the table below. In order to access some
of these pins the configuration switch must be set to OFF position (see section 8) and some
extra considerations must be taken in consideration when using these pins.
M-Duino terminal
SCL
SDA
RX0
TX0
RX1
TX1
MISO
MOSI
SCK
Pin 3
Arduino pin
21
20
0
1
19
18
50
51
52
3
Enable Arduino pin
Communication switch: OFF
Communication switch OFF
Communication switch: OFF
Communication switch: OFF
Communication switch: OFF
*IMPORTANT: Do not connect the terminals in the chart above to voltages higher than 5V.
These terminals provide direct access to the Mega board.
A part from the switch configuration there are some special conditions depending on these 5V.
Now it is going to be shown the considerations to operate with these pins.
I2C pins – SDA/SCL
The I2C protocol is meant to work in a pull-up configuration. A pull-up configuration means
that when the pin is at rest (nothing connected to it) it always reads a HIGH value. In this case
it reads 5V when nothing is connected. The pull-up configuration is stablished by default in
these pins.
If it is meant to work them as a GPIO at 5V, it has to be considered that they are pull-up
inputs.
*IMPORTANT: I2.5 & I2.6 are not pull-up inputs although they are referred to the I2C pins
(switch configuration). There is a “reverse pull-up circuit “that is stablished in order to have the
same behaviour as the other inputs.
Serial 0 – RX0/TX0
The Serial0 protocol can work also as a 5V pin. These pins should be used ultimately, only in
case that all the 5V pins are already performing a function. This is because they are shared
with the USB interface. If using these pins, the USB communication cannot be working at the
same time. When the PLC is not installed, the USB communication is normally required for
debugging, uploading and intercommunicating with the Ethernet controller. If using both
interfaces at the same time the Arduino board will get blocked.
These pins are not stablished with a pull-up or a pull-down configuration. The state of these
pins is unknown. If these pins must be used, they require a pull-up or a pull-down
configuration. The Arduino board allows the pins to be set in a pull-up configuration. If not it
must be stablished an external pull-up or pull-down circuit in order to correctly work with
these pins.
Serial 1 – RX1/TX1
In the GPRS/GSM Controller, Serial 1 is used to communicate through the Sim800L integrated
GPRS/GSM Module. If you want to use Serial 1 instead of GPRS/GSM, you must set the Pin 2
(Pin used as the GPRS/GSM) always at high position.
Remember: if you use the Serial1 in your program, you will not be able to use the GPRS / GSM
functionalities!
These pins are not stablished with a pull-up or a pull-down configuration. The state of these
pins is unknown. If these pins must be used, they require a pull-up or a pull-down
configuration. The Arduino board allows the pins to be set in a pull-up configuration. If not it
must be stablished an external pull-up or pull-down circuit in order to correctly work with
these pins.
SPI – MISO/MOSI/SCK
These pins can only work as a 5V pins if the Ethernet protocol is not going to be used. As the
Ethernet protocol uses the SPI to communicate with the Arduino board, both behaviours
cannot happen at the same time as the Ethernet would not work.
These pins are not stablished with a pull-up or a pull-down configuration. The state of these
pins is unknown. If these pins must be used, they require a pull-up or a pull-down
configuration. The Arduino board allows the pins to be set in a pull-up configuration. If not it
must be stablished an external pull-up or pull-down circuit in order to correctly work with
these pins.
Pin 3
This pin is only referred to the inputs I0.1. If the switch configuration is in OFF position the pin
Pin 3 will be available.
These pins are not stablished with a pull-up or a pull-down configuration. The state of these
pins is unknown. If these pins must be used, they require a pull-up or a pull-down
configuration. The Arduino board allows the pins to be set in a pull-up configuration. If not it
must be stablished an external pull-up or pull-down circuit in order to correctly work with
these pins.
Pin 2
REMEMBER THAT PIN2 IS USED BY THE SIM800L MODULE AS RESET PIN, SO IS NOT
AVAILABLE IN THE GPRS/GSM CONTROLLER!
IF YOU WANT TO USE SERIAL1, YOU MUST SET THE PIN2 ALWAYS AT HIGH POSITION.
A Zone Features: Communications & RTC & uSD
RS-232
The Arduino Mega function code to access the RS-232 port in the M-Duino is Serial2 (pins 16
and 17 of the Arduino Mega).
For the RS-232 communication protocol there isn’t any switch that affects it. So it does not
matter the configuration of the switches to implement a RS-232 communication.
Using the boards of Industrial Shields, there is a library that simplifies the RS-232
implementation.
RS-485
For RS485 communication protocol the defined Arduino Mega pins are showed in the chart
below.
Function
DI
RO
RE
DE
Arduino Pin
14
15
11
46
For the RS-485 communication protocol there is only one switch that affects in this
communication. The RS-485 protocol will be always enabled, the only switch that affects is the
one called “FD rs-485 HD” (See Section 8). This switch makes the choosing between RS-485
Half Duplex or RS-485 Full Duplex (RS-422).
Using the boards of Industrial Shields, there is a library that simplifies the RS-485
implementation.
I2C
I2C communication DOES NOT REQUIRE a pull-up resistor for the M-Duino Family. The pull-up
resistor is already implemented in the PCB.
I2C communication is configured by switches, so the switches must be configured in order to
enable the I2C communication.
Switch
SCL/I2.6
SDA/I2.5
Analog Shield
ON
OFF
D ZONE
I2.6
SCL
I2.5
SDA
Relay Shield
ON
OFF
I2.1
I2.0
SCL
SDA
To enable I2C the switches SCL/I2.6(I2.1) & SDA/I2.5(I2.0) must be set to OFF mode. In this
mode the inputs are totally disabled and the I2C is now enabled.
Industrial Shields does not provide any library to implement the I2C as it can be used the
standard library of Arduino called Wire.
SPI
The M-Duino pins used for the SPI bus are summarized in the table below. For SPI bus MISO,
MOSI and CLOCK pins are common to all the connected devices to the M-Duino, conversely,
each of the connected devices will have a single and dedicated SS pin.
Function
M-Duino connection
MISO
50 S0
MOSI
51 SI
CLOCK
52 SCK
Reset
Reset
SS
SCL/SDA/RX0/TX0/RX1/TX1/RX3/TX3/Pin2/Pin3
Check the switch configuration at section 8 to enable SS pins.
Mega board pin
50
51
52
Reset
21/20/1/0/19/18/15/14/2/3
TTL
M-Duino has two TTL ports, RX0/TX0, RX1/TX1. TTL0 is accessed with the function Serial (pins 0
and 1 of the Arduino Mega). TTL1 is accessed with the function Serial1 (pins 18 and 19 of the
Arduino Mega).
In order to use the TTL pins the configuration of the switches have to be the following one:
Switch
RX1/I1.6
TX1/I1.5
Analog Shield
ON
OFF
C ZONE
I1.6
RX1
I1.5
TX1
Relay Shield
ON
OFF
I1.1
I1.0
RX1
TX1
If the switches RX1/I1.6(I1.1) & TX1/I1.5(I1.0) are in OFF mode, the RX1/TX1 will be enabled. In
order to use TTL3 these switches must be in OFF mode.
Ethernet
M-Duino Ethernet port controller is based on w5500 IC, which is the compatible IC compatible
with Arduino Ethernet2 Shield libraries. All Ethernet shield Arduino libraries are compatible
with the M-Duino. In the M-Duino, W5500 IC communicates to the Mega board via SPI bus (SS
Arduino Mega pin 10).
RTC
M-Duino RTC Module is based on the DS1307 Chip. This chip works with the I2C protocol
communication, so it is required to have enabled the I2C protocol.
4 switches have to be configured in order to enable the RTC features:
LEFT ZONE
SWITCH
ON
NC
NC
RTC SCL
RTC
RTC SDA
RTC
Switch
SCL/I2.6
SDA/I2.5
OFF
-
Analog Shield
ON
OFF
I2.6
SCL
I2.5
SDA
RTC SCL & RTC SDA must be set to ON mode to
enable the I2C wires to the RTC. If they are in OFF
mode, the Arduino won’t communicate with the RTC.
Relay Shield
ON
OFF
I2.1
SCL
I2.0
SDA
I2C must be enabled in order to
communicate with the RTC. See
section 11 I2C to enable it.
Using the boards of Industrial Shields, there is a library that simplifies the RTC implementation
called RTC.
uSD
The micro SD uses the SPI communication to interact with the Arduino Mega. The SPI protocol
is always enabled, as there are no switches that configure it. However, there is a switch that
must be placed to ON mode in order to communicate with the uSD:
D53(SD): If this Switch is OFF, it enables the Chip Select of the microSD socket and disables
Q2.0. If this switch is ON, it enables the Q2.0 output. If the switch is in ON mode the microSD
can’t be used.
The uSD socket is found in the TOP part of the communication Shields, so in the frontal part of
the PLC, it is required to open the plastic found in the frontal part and the socket is located
under the supply of the Arduino.
Switch
D53(SD)
LEFT ZONE
Analog Shield
ON
OFF
uSD
Q2.0
D53(SD)
Relay Shield
ON
OFF
-
D53(SD)
Using the boards of Industrial Shields, there is a library that simplifies the uSD implementation
called SD. It is the same as the Arduino library, with the only modification of using the pin 53 to
select the Chip Select of the uSD chip.
GPRS/GSM
The SIM800L module is the integrated module for the use of GPRS / GSM in this PLC and to
program it you must download this library on your Arduino IDE.
You can test the GPRS / GSM functionality using the examples that come with the library:
When defining the pins in the program, take into account that the internal connections
between the Sim800l module and the Arduino Mega are the following:
Arduino Mega Pinout
Sim800L Pinout
5Vdc
Vcc
GND
GND
Tx1 (Pin 18)
TxD
Rx1 (Pin19)
RxD
Pin 2
RST
How to define it in a sketch:
#define FONA_RX 19 //RX1 on Arduino Mega
#define FONA_TX 18 //TX1 on Arduino Mega
#define FONA_RST 2
The GPRS/GSM protocol is always enabled as there are no switches that configure it.
the GPRS / GSM protocol uses the Serial1 of the equipment to be able to communicate and the
pin2 for the module reset.
If you want to use Serial1, you must indicate in the program that pin2 is always in High
position. In case of using the Serial1, the GPRS / GSM communication can not be used.
I/O technical details:
Digital Output Waveform:
Digital Out-put Turn-off:
PWM Waveform:
Analog Out Turn On:
Analog Out Turn-Off:
Analog /Digital input Turn-on:
Typical Connections
Connector details:
The connector inside the PLCs that mounts on the PCB is MC 0,5/10-G-2,5 THT – 1963502
from Phoenix contact. MC0,5/10-G-2,5THT
For I/O and power supply there is a FK-MC 0,5/10-ST-2,5 - 1881406 connector from Phoenix
contact. FK-MC 0,5/10-ST-2,5
Connection details:
Article reference
MC 0,5/10-G-2,5 THT
Height
8,1mm
Pitch
2,5mm
Dimension
22,5mm
Pin dimensions
0,8x0,8mm
Pin spacing
2,50mm
Article reference
FK-MC 0,5/10-ST-2,5
Rigid conduit section min.
0,14 mm²
Rigid conduit section max.
0,5 mm²
Flexible conduit section min.
0,14 mm²
Flexible conduit section max.
0,5 mm²
Conduit section AWG/kcmil min.
26
Conduit section AWG/kcmil max.
20
Mechanical Characteristics
-
Dimension GPRS/GSM Controller:
-
DIN Rail mounting
About Industrial Shields:
Direction: Fàbrica del Pont, 1-11
Zip/Postal Code: 08272
City: Sant Fruitós de Bages (Barcelona)
Country: Spain
Telephone: (+34) 938 760 191 / (+34) 635 693 611
Mail: [email protected]
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