Controllers
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CNC720
CNC720 Manual

Connectors

9min

Power

The voltage of the supplied power is 24V DC.

Due to a protection diode at the input, the 24V that is available on a number of connectors will be a bit lower, please check when connecting 24V devices to that connector if they will operate correctly.

Although the 24V is also available on the box header connectors, it is advisable to use separate wiring for powering 24V devices that exceed 50mA of required current.

The image below shows the power connector.

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Check the polarity of the power connections, damage to the board may occur if the polarity is reversed.

Network

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The board needs to be connected via a CAT5 or CAT5E cross cable. We advise using properly shielded SF/UTP network cables.

The default IP address is 172.22.2.100

Make sure that the PC that the board is connected to is correctly setup and has the correct IP address, make sure there is no IP address conflict.

RS485

Via the RS485 connector external hardware can be connected. RS485 is a balanced signal, this decreases susceptibility to interference. The protocol that is used is MODBUS RTU.

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The connector contains four signals:

Name

Meaning

COM

Common

B

Balanced signal B

A

Balanced signal A

IRQ

Input for external interrupt (currently not used)

I/O CNC Boxheader connectors

These connectors contain all the relevant signals of the board.

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CN1

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Pin

Name

Direction

Type

Function

Electrical Spec.

Remarks

1

GND



Ground







2

+5V



Power



+5V



3

STEP1

OUT

Digital



+5V



4

DIR1

OUT

Digital



+5V



5

ENABLE1

OUT

Digital



+5V



6

STEP2

OUT

Digital



+5V



7

DIR2

OUT

Digital



+5V



8

ENABLE2

OUT

Digital



+5V



9

STEP3

OUT

Digital



+5V



10

DIR3

OUT

Digital



+5V



11

ENABLE3

OUT

Digital



+5V



12

STEP4

OUT

Digital



+5V



13

DIR4

OUT

Digital



+5V



14

ENABLE4

OUT

Digital



+5V



15

HOME1

IN

Digital



Max. input Voltage 24V



16

HOME2

IN





Max. input Voltage 24V



17

HOME3

IN





Max. input Voltage 24V



18

HOME4

IN





Max. input Voltage 24V



19

GND



Ground







20

DRVALM

IN

Digital

Drive Alarm

Max. input Voltage 24V



21

Reserved











22

Reserved











23

Reserved











24

NO_ESTOP

OUT

Indicates no E-stop is active





25

GND



Ground







26

+24V



Power







CN2

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Pin

Name

Direction

Type

Function

Electrical Spec.

Remarks

1

GND











2

+5V







5V



3

RUN

IN

Digital

RUN switch

Max. Input voltage: 5V

Active low

4

HW-A

IN

Digital

Handwheel A input

Max. Input voltage: 5V



5

PAUSE

IN

Digital

PAUSE switch

Max. Input voltage: 5V

Active low

6

HW-B

IN

Digital

Handwheel B input

Max. Input voltage: 5V



7

AN1

IN

Analogue

Analogue input 1

Max. Input voltage: 3.3V

12 bits

8

AN2

IN

Analogue

Analogue input 2

Max. Input voltage: 3.3V

12 bits

9

GND



Ground







10

AVDD



Power



3.3V



11

EXT-ERROR

IN

Digital

Extern Error

Max. input voltage 24V



12

ESTOP

IN

Digital

Emergency Stop





13

SPINDLE-X

IN

Digital

Spindle position





14

Reserved











15

PROBE

IN

Digital

Probe/toolsetter





16

Reserved





17

TOOLON

OUT

Open Collector

Switch tool ON (eg. Spindle)

Max. rating 50V/500mA



18

SYSREADY

OUT

Open Collector

System Ready

Max. rating 50V/500mA

System Ready, indicates that system is ready for operation.

19

COOL1

OUT

Open Collector

Coolant1 signal

Max. rating 50V/500mA



20

COOL2

OUT

Open Collector

Coolant2 signal

Max. rating 50V/500mA



21

CHARGEPUMP

OUT

Open Collector

Watchdog signal

Max. rating 50V/500mA

Pulsed signal 10Hz

22

ENABLE_OC

OUT

Open Collector

Drive enable

Max. rating 50V/500mA



23

PWM_VOLT

OUT

Open Collector or Analog

PWM or 0-10V

PWM mode:  Max. rating 50V/500mA 0-10V mode: Max. 100mA



24

AUXOUT1

OUT

Open Collector

Generic output

Max. rating 50V/500mA



25

GND



Ground







26

+24V



Power



24V