PP-BOB2-v1 PARALLEL PORT BREAKOUT BOARD

PP-BOB2-v1 PARALLEL PORT BREAKOUT BOARD

PP-BOB2-v1 PARALLEL PORT BREAKOUT BOARD

Document: Operation Manual

Document #: T17

Document Rev: 2.0

Product: PP-BOB2-v1.0

Product Rev: 1.0

Created: March, 2013

Updated: Dec, 2014

THIS MANUAL CONTAINS INFORMATION FOR INSTALLING AND OPERATING THE FOLLOWING

PRODUCT:

PP-BOB2-

V

1.0

PARALLEL PORT BREAKOUT BOARD

“TINY CONTROLS” AND THE TINY CONTROLS COMPANY’S LOGO ARE COPYRIGHTS OF TINY

CONTROLS PVT.

LTD.

OTHER TRADEMARKS, TRADE NAMES, AND SERVICE MARKS OWNED OR

REGISTERED BY ANY OTHER COMPANY AND USED IN THIS MANUAL ARE THE PROPERTY OF THEIR

RESPECTIVE COMPANIES.

TINY CONTROLS PRIVATE LIMITED

C-55, NISHAT PARK, KAKROLA MOR, NEW DELHI, INDIA – 110078

WEB: http://www.tinycontrols.com

PHONE: +91-991-119-3210

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CONTENTS

1. PARALLEL PORT BREAKOUT BOARD INCLUDES

2. MECHANICAL INSTALLATION

3. GENERAL DESCRIPTION

4. SPECIFICATIONS

5. BREAKOUT BOARD TERMNALS

6. CONNECTING OUTPUTS

7. CONNECTING INPUTS

8. JUMPER SETTINGS

9. LED INDICATORS

10. EXAMPLES: INPUT/ OUTPUT CONNECTIONS

11. CONNECTION DIAGRAM

12. MACH3 CONFIGURATION EXAMPLE

In the following pages, PP-BOB2-

V1.0 “Parallel Port Breakout Board” is termed as

Breakout Board or simply BOB.

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PARALLEL PORT BREAKOUT BOARD INCLUDES

1. Breakout Board

2. Cable wire with DB-25 Connector

MECHANICAL INSTALLATION

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GENERAL DESCRIPTION

The parallel port breakout board card is designed for a flexible interface between CNC machine and computer system. The board is fully compatible with software like Mach3,

Turbo CNC, EMC2, KCAM etc.

The Breakout Board (BOB) translates signals between CNC machines and PC signals and isolate PC motherboards from electrical problems. The BOB gives step and direction outputs to steppers for 4 axes of CNC. The outputs for X- axis are buffered twice and received from two different connectors to make card useful for gantry style machines also. All the outputs are buffered and received through screw terminals from card.

These outputs can be received in Pull up or Pull down states and motor Common output signal can be set as low or high by changing the jumper configuration.

Three relays are provided on the board and an isolated PWM to 0-10V analog output circuit is provided for controlling the spindle speed. An on-board 5V regulator is given with a 5V output terminal.

An on-board charge pump is provided for safety of card. It is jumper configurable and it can be operated from frequencies as low as 200Hz to more than 15 KHz. Charge pump can be set disabled and this buffered output can be used as general purpose output by changing the position of respective jumper.

Input terminals compatible to 5-24V are given on the board. These are filtered for noise immunity ensuring that there is no possibility of error. LED indicator for inputs and outputs make the signal debugging task easy.

All the outputs can also be used as general purpose outputs making the system flexible.

A DB-25 connector and 26 pin box header is provided on the board making its connections with PC easy.

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TECHNICAL SPECIFICATIONS

Contents Specifications

Communication terminals

Axes

Axes drive control type

Digital outputs

Digital inputs

Analog output (0-10V) isolated

Analog output 5V

Relay

Supply voltage

Max Power Consumption

Ambient temperature range

Relative Humidity

Dimensions

Weight

Parallel port terminal for connection with PC &

26 pins box header

4 axes and X- slave

Step/ Dir

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5

1

1

3

12V DC

12V/ 0.5A

0˚-55˚ C

90% (without condensation)

135x95

40g

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BREAKOUT BOARD TERMINALS

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CONNECTING OUTPUTS:

Axes outputs:

PP-BOB2-V1.0 has dedicated Step, Dir and COM outputs for four independent axes named as X, Y, Z and A-axis. The X-axis outputs are double buffered, named as X1 and

X2 and received through two individual terminals allowing easy connection to two motors on the same axis. This type of “Hardware slaving” of motors is used in gantry style machine design when two motors are used on the same axis. In total, there are five 3 pins terminals connectors with signal Com, Step and Direction.

These are tied to parallel port signals (from down to top in image adjacent):

P9

P8

COM

P7

P6

COM

P5

P4

COM

P3

P2

COM

X1-axis:

COM- Terminal COM

X1-axis:

STEP- Terminal P2

X1-axis:

DIR- Terminal P3

X2-axis:

COM- Terminal COM

X2-axis:

STEP- Terminal P2

X2-axis:

DIR- Terminal P3

Y-axis:

COM- Terminal COM

Y-axis:

STEP- Terminal P4

Y-axis:

DIR- Terminal P5

Z-axis:

COM- Terminal COM

Z-axis:

STEP- Terminal P6

Z-axis:

DIR- Terminal P7

A-axis:

COM- Terminal COM

A-axis:

STEP- Terminal P8

A-axis:

DIR- Terminal P9

P3

P2

COM

However, for any system, if the outputs for any axis aren’t used, then these outputs can be used for any purpose other than axis control. User can use these outputs as general purpose outputs.

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Analog output 0-10V:

A 0-10V analog output signal goes directly to VFD to control the spindle. This circuit is completely isolated from rest of the control board. If 10V input is fed from VFD to terminal 10V Analog IN; an analog output in range of 0-10V can be drawn from terminal 0-10V Analog OUT. If 5V input is fed from VFD to 10V Analog IN, an analog output in range of 0-5V can be drawn from terminal 0-10V Analog OUT terminal. The output voltage can be set through the POT connected.

Analog output 5V:

A 5V analog output signal is driven from the control board. It is the regulator output and remains active until the power supply continues to be supplied to board.

Relay:

Relay Contact terminals are directly attached from this 3 pin connector. Pins are marked as N/O, COM and N/C. Digital output signal P14 controls the relay-(14), P16 controls the relay-(16) and P17 controls the relay-(17). The respective digital output signal can be used to control the relay or it can be used as a general purpose output and it depends in the positioning of respective jumper. This is discussed in detail in jumper settings section of the manual.

CONNECTING INPUTS:

Power supply:

Connect a power supply of +12V DC at the input pin of parallel port breakout board for its operation.

Input terminals:

The board has five opto-isolated inputs connected to signal P10, P11, P12, P13 and

P15. All inputs are filtered for noise immunity and are active low. Active low means that when the input of opto-isolator is driven, the signal becomes low.

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4

Input+ 1

Input- 2

Output

3 GND

Signal P15 is dedicated to the emergency switch and the corresponding LED indicator “ESTOP” shows activity of this signal. The LED glows when the input is driven to terminal.

The inputs are directly connected to opto-couplers with 470 ohm series resistors. Care must be taken to use appropriate resistors while connecting the signals above +5V to the board so as to avoid any damage to the board. For 5V, no additional resistor is to be added for input signal. For more than +5V, appropriate series resistors should be added.

The example circuits mentioned further in the manual show how to wire different types of signals/ devices to board inputs.

JUMPER SETTINGS:

Jumper 1 (JP1) and Jumper 3 (JP3):

JP1 and JP3 at position 1-2:

When the jumper is mounted at position 1 and 2 for jumper JP1 and JP2, charge pump on P1 signal is enabled and controls the enabled signal of output buffers of all output signals. In this mode, user needs to configure the CNC software to output the charge pump signal on

P1. On the application of an appropriate charge pump signal, the output buffers are enabled otherwise all the output signals remain disabled.

Charge pump works for frequency as low as 200Hz to more than 15 KHz.

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At this jumper position, LE

D “CPGD” glows when an appropriate “charge pump signal” is detected on P1 signal driven from CNC software.

JP1 and JP3 at position 2-3:

Position both the jumpers in this configuration to keep the charge pump circuit disabled and the output buffers are permanently enabled. The buffered signal P1 is routed to the output terminal and can be used as a general purpose output. The corresponding LED is also disabled.

Jumper 2 (JP2):

JP2 at position 1-2:

Position JP2 in this configuration to keep the “Step and Dir” signal of motor outputs in “Pull down” state. This is the default setting for JP2 in parallel port breakout board.

JP2 at position 2-3:

Position JP2 in this configuration to keep the “Step and Dir” signal of motor outputs in “Pull up” state.

Jumper 4 (JP4):

JP4 at position 1-2:

Position JP4 in this configuration to keep the Motor COM output signal connected to Ground. This is the default setting for JP4 in parallel port breakout board.

JP4 at position 2-3:

Position JP4 in this configuration to keep the Motor COM output signal connected to Vcc.

Jumper 5 (JP5), Jumper 6 (JP6) and Jumper 7 (JP7):

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JP5:

This jumper controls the signal P14.

JP5 placed:

This is the default setting for parallel port breakout board. This configuration routes the signal P14 to control the on board relay named “RELAY-(14)”.

However, in this position, output signal on terminal P14 isn’t available.

JP5 removed:

This configuration routes the buffered signal P14 directly to its output terminal and it can be used as general purpose output signal.

Signal P14 has an associated LED to indicate its activity, LED works irrespective of jumper position.

JP6:

This jumper controls the signal P16.

JP6 placed:

This is the default setting for parallel port breakout board. This configuration routes the signal P16 to control the ‘on board’ relay named “RELAY-(16)”.

However, in this position, output signal on terminal P16 isn’t available.

JP6 removed:

This configuration routes the buffered signal P16 directly to its output terminal. It can be used as general purpose output signal.

Signal P16 has an associated LED to indicate its activity, LED works irrespective of jumper position.

JP7:

This jumper controls the signal P17.

JP7 at position 1-2:

This is the default setting for parallel port breakout board. This configuration routes the signal P17 to control the ‘on board’ relay “RELAY-(17)” through

PWM. However, in this position, output signal on terminal P17 isn’t available.

JP7 at position 2-3:

This configuration routes the buffered signal P17 directly to its output terminal. It can be used as general purpose output signal.

Signal P17 have an associated LED to indicate its activity, LED works irrespective of jumper position.

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LED INDICATORS:

P2, P4, P6 and P8:

These LED glow when a step pulse is driven to motor drive of respective axis.

P3, P5, P7 and P9:

These LED glow when a direction signal is driven to motor drive of respective axis.

P10-P13:

The respective LED glow when an input is driven at terminal P10-P13.

ESTOP:

This LED is dedicated for emergency signal and glows when an emergency input is driven at terminal P15.

CPGD:

LED CPGD glows when an appropriate “charge pump” signal is detected on terminal P1 from the CNC software configured. This LED doesn’t glow if charge pump is kept disabled and its output is used as general purpose output.

LED associated with signal P14, P16 and P17 indicates the activity of respective signals.

STATUS:

Status LED has three states:

Fast Blink:

When the power is connected to the board, this LED blinks fast.

Lazy Blink:

When a PWM signal is available, this LED blinks lazy.

Continuous ON:

This LED glows continuously when a valid PWM signal more than

10% is available.

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EXAMPLE: INPUT/ OUTPUTS CONNECTIONS

Example Circuit for connecting emergency switch

Connecting the relay:

Vcc

GND

ESTOP

N/O

P15+

P15-

Vcc

Any one output pin

P14, P16 or P17

R3

1K

D1

1n4148

GND

Connecting multiple switches:

Relay

Vcc

Example circuit for connecting multiple limit switches to one input terminal

+ve terminal of corresponding

Input e.g. +P10, +P11, +P12, +P13

GND

S1

S2

SPDT

Q1

2N3904/2N2222/BC547

GND

S4

S5

-ve terminal of corresponding

Input e.g. -P10, -P11, -P12, -P13

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Connecting multiple switches:

Vcc: +12V to +24V

R4= 1K for 12V and 2.2K for 24V depending on sensor circuit

Brown

Brown

Brown Brown

Black

Black

Black Black

1K

R4

Inductive proximity sensor NPN-NO

Blue

GND

Blue Blue Blue

+ve terminal of one of the inputs e.g. +P10 or +P11 or +P12 or +P13

-ve terminal of one of the inputs e.g. -P10 or -P11 or -P12 or -P13

Note: The above example circuits are just suggestions and may not work with all kinds of switches/ sensors voltages etc.

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Power supply

10V IN

OUT 0-10V

0V

Connection diagram

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Example: Mach3 Configuration

Step 1:

After installing “Mach3” software, run Mach3 Mill from desktop. Following screen appears:

Step 2: To select the native units of choice, Select Config =>Select native unit. Press Ok if the message appears. Select units for “Motor setup” by clicking on option button and press Ok. Choose Inches for Imperial units.

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Step 3: Configure ports and pins in Mach3. Select Config=> Ports and Pins.

Step 4:

After step 3, a window appears. A screen for first tab “Port setup and Axis select” appears. If the port available on computer motherboard is to be used, standard address for the port is

“0x378”. But other addresses are sometimes used as well. This information is conveyed to Mach3 by selecting “Ports and Pins” under Config menu. Shown below is an example where the default “computer motherboard” is selected and standard address in

“0x378”.

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Step 5:

Click on “Motor outputs” tab. Here, user can select the number of motors needed to be controlled and to which pin in printer port, drives for all motors are to be connected.

Use the identical sequence as given below to configure.

a.

Enable X, Y, Z, A-axis and Spindle for PP-BOB1-V2 by ensuring that there is a green checkmark in first column of those axes.

b.

The second column sets pin to which the step input on our motor drive is connected. In this case, X-axis drive step input is connected to pin 2, Y to pin 4, Z to pin 6, A to pin 8 and spindle to pin 17.

c.

The third column sets drive direction inputs. In this case, X-axis direction input is connected to pin 3, Y to pin 5, Z to pin 7, A to pin 9 and spindle to pin 17.

Note:

It’s not mandatory to enable all four axes, if not required. For example in case of lathe machine; only X and Z axes needed to be enabled. So disable the other axes.

If one of the axis moves in reverse direction, user can correct it by ticking “Active Low” on corresponding “Dir low active”.

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Step 6:

Click on “Input signal” tab to configure Input signals. Configure the following settings.

a.

To enable the input terminals, enable Input# 1, Input# 2, Input# 3 and Input# 4.

b.

Change pin numbers 10, 11, 12 and 13 respectively in pin number column.

Step 7: A good machine tool has an emergency stop button which if pressed, halts the machine movement in the safest way possible to prevent any damage to machine and injury to operator.

This manual allows the user to pay attention to how the Mach3 understands the emergency button and whether it has been pressed. Use the steps given below to configure the emergency button:

a.

Config=> Ports and Pins=>Input signals.

b.

Enable ESTOP enable by checking green checkmark.

c.

In pin number column, make it 15.

d.

Emulated can be ticked for test purpose (when physical switches are not attached).

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Step 8: Click on

“Output signals” tab for configuring output signals. Configure the following settings.

a.

To enable relays with J5 and J6, enable the output# 1 and output# 2.

b.

Change the pin number 14 for output#1 and pin number 16 for output# 2.

c.

To enable charge pump, enable charge pump and change pin number to 1.

These steps are shown below:

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Step 9: Click on

“Spindle setup” tab. Please note that on M3 and M4 commands, spindle moves in clockwise and anticlockwise directions respectively. Tick on disabled “Spindle relays” in relay control section. All this is to be controlled through PWM.

Step 10: Save all the configurations by clicking on Apply and then Ok button.

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Step 11: Select Config=> Motor Tuning Config. Configure motor tuning parameter for each axis.

Press “Save axis settings” every time any parameter value is changed else any changes made by the user won’t be saved.

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