03217917-01-01E By DEK Technical Reference Manual Vol 1_enPDFA.pdf - 第118页

9 MACHINE CONTROL 9.4 CAN BUS 118 TECHNICAL REFERENCE MANUAL Vol 1 E By DEK 04/2019 9.4.1 I/O Node Boards C A U T I O N A N T I -S T A T I C H A N D L I N G . S T A N D A R D P R E C A U T I O N S M U S T B E A D H E R E…

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TECHNICAL REFERENCE MANUAL Vol 1 E By DEK 04/2019 117

9.4 CAN BUS

Servo Node 9

Camera Y Motor

Servo Node 8

Camera X Motor

CAN Bus

The Controller Area Network (CAN) is a bus system for machine motion control. An encoder/de-

coder for the 500Kbit/s rate CAN serial link is fitted to the NextMove ES card to enable communica-

tion with the CAN Nodes. The CAN is a 2-wire data link designed for transmission of small data

packets for fast update of axis position information.

The CAN Bus connects the NextMove ES card to the Nodes that provide machine motion, switch

functions and sensor feedback. There are two different types of Nodes:

●

I/O Node Boards

●

Stepper Nodes

For the CAN Bus to work correctly, the CAN Bus must be terminated using a CAN Terminator. The

CAN Terminator is fitted to the output connector of the last node in the CAN Bus line and consists

of a 9 pin D type connector with a link resistor fitted inside the connector hood.

CAN Terminator Connection

1 Camera Carriage 3 Connector for CAN Bus Input

2 Camera X Motor (Servo Node 8) 4 Connector for CAN Terminator

9 MACHINE CONTROL

9.4 CAN BUS

118 TECHNICAL REFERENCE MANUAL Vol 1 E By DEK 04/2019

9.4.1 I/O Node Boards

CAUTION

ANTI-STATIC HANDLING. STANDARD PRECAUTIONS MUST BE ADHERED TO

WHEN HANDLING ELECTRONIC CARDS AND CONFIGURING AND INSERTING

INTO THE ENCLOSURES.

The I/O Node Boards consists of multiple inputs and outputs, CAN encoder/decoder and multi-way

connectors for machine components.

There are three I/O Node Boards fitted to a standard machine with a possible one other board for

the underscreen cleaner, if fitted, these are:

●

I/O Node 1 - NextMove ES card (CAN master) located in the M36 Machine Control Enclosure

(standard)

●

I/O Node 2 - Main Machine I/O board located at the rear of the machine (standard)

●

I/O Node 3 - Print Carriage I/O board located inside the print carriage extrusion (standard)

●

I/O Node 4 - Screen Cleaner I/O board located at the rear of the machine (optional)

I/O Nodes 2 and 4 have a green (status) and a red (error) LED mounted on the board. The status

LED should flash twice periodically and the error LED should not be illuminated during normal op-

eration. The following table describes other operations of the LEDs:

No of Pulses Red (error) LED Green (status) LED

Static Off No error Initialisation/Code execution stopped

1 Node ID from DIP switches is 0 CANopen NMT state is 'pre-opera-

tional'

2 EEPROM contents invalid (EEPROM

empty/checksum error)

CANopen NMT state is 'operational'

3 EEPROM access impossible (hard-

ware error)

CANopen NMT state is 'stopped'

4 CAN controller switched to 'bus-off'

mode

N/A

5 Firmware error N/A

6 Controller overload N/A

Static On Sever hardware/software error N/A

9.4.2 I/O Node 1

I/O Node 1 is the CAN master and is also known as the NextMove ES card housed in the M36 Ma-

chine Control Enclosure. For more information, refer to 9.3.2 "NextMove ES Card" [}99].

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9.4.3 I/O Node 2 (Main Machine I/O)

N2PL3

N2PL1N2PL2

N2SK2 N2SK6 N2SK5 N2SK7 N2SK8

N2SK10N2SK4

MAIN I/O NODE 2

181436 ISSUE

N2SK9 N2SK3

Connector Description I/O

N2PL1 Power Input

N2PL2 CAN Signal In Input

N2PL3 CAN Signal Out Output

N2SK2 Vacuum Tooling Power/Grid-Lok Tooling Output

N2SK3 Tricolour Beacon Output

N2SK4 Chase Clamps - Screen Clamps - Board Clamps - Board Stop

- Lid Bolt - Rail Board Stop - Cleaner Squeegee - Solvent

Tank Pressure

Output

N2SK5 Rising Table Brake Output

N2SK6 Internal Light Output

N2SK7 Air Pressure Sensor Input

N2SK8 Lid Bolt Extended Sensor Input

N2SK9 Vacuum Tooling Sensor Input

N2SK10 Screen Sensor Input

9.4.3.1 N2PL1

6 Way Trident Connector (with pins)

Pin No Signal Pin No Signal

1 24V US 4 0V

2 0V 5 12V

3 24V SW 6 0V