CAN Bus Workshop_Version 03__06-2008_EN.pdf - 第296页

1 - 88 Siplace C AN T est Box 1 CAN T est Box Edition 04/200 8 88 Comments :

1 - 87

Siplace CAN Test Box

Edition 04/2008 1 CAN Test Box

CAN Bus with CAN Terminator on the D4 in detail 1

For the D-Series machine we use two different CAN BUS circuits with a different speed. The ma-

chine CAN BUS with 1Mbit/s and the CAN BUS for the component table and tape cutter with 500

kbit/s. The speed of the CAN BUS will be reduce on the CAN Interface board which is located on

the CAN I/O module.

Fig. 1.10 - 63 CAN Bus in detail for example PA1 D4 machine

Note to measure the CAN terminator:

In General, the terminator has to measure if the machine switch off!

In the Fig. 1.10 - 63 for the component and tape cutter CAN BUS (500kBit/s), there are four ter-

minators in the circuit, if the machine switch off and the component table connected. So you mea-

sure on position (1) 30 ohm.For the machine CAN Bus (1MBit/s) you measure 60 ohm

When the machine is switch on, the Relays contacts K1 will be open and the normal termination

of 60 Ohm is available. Now, If you change or disconnect a component table, the CAN BUS is

working normal, because the relay contact K1 will be closed and the other terminator is available .

Component Table 1Component Table 4

Gantry head distributer

Gantry 4

TQ M

CAN_H igh

CAN_Low

Machine CAN Bus

1 Mbit/s

CAN Bus for

Component table and

tape cutter 500 kbit/s

Axis unit 1/4

PA 1

Transport

control unit

Micro BOX PC

(Machine controller)

Gantry head distributer

Gantry 1

TQ M

CAN_H igh

CAN_Low

CAN

I/O module

sector 4

CAN Interface

500 KBit/s

CAN_High

CAN_Low

CAN_High

CA N_ Lo w

Com. unit

Tape cutter

Location 1

Tape cutter

Location 4

Com. unit

CAN Bus

Terminator

Comp.table 1

CAN Bus

Terminator

Comp.table 4

120 Ohm120 Ohm

120 Ohm

Relays

contact K1

Relays

contact K1

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Siplace CAN Test Box

1 CAN Test Box Edition 04/2008

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