Switch off the crane. See Switching off the
crane.The LED matrix display shows the load as well as the status and messages directly at the crane.
A faulty LED matrix display can be removed and replaced as an individual module. For this purpose, it is connected with plug-in connections or terminal blocks.
The LED matrix display is controlled by the central PLC via a device address. The device address can be automatically or manually set.
The device address is a digital unique address of each CAN bus device in the CAN bus network, via which the PLC and the respective CAN bus device exchange data. Each CAN bus device must have its own unique device address. If two CAN bus devices inadvertently have the same device address there will be a conflict and a fault is displayed.
The bit rate is the speed with which the data is exchanged.
Switch off the crane. See Switching off the
crane.
Remove or disconnect connection cables from
the faulty components.
Open housing of the LED matrix display.
On the faulty LED matrix display, check
whether the terminating resistor was switched on or switched off.
On the circuit board are two jumpers for the terminating resistors. One is for the terminating resistor in the CAN bus network, the other for the terminating resistor in the Modbus network. To avoid errors, bother jumpers should always be inserted jointly and consistently.
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Terminating resistor jumper |
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Plug in both jumpers for the terminating
resistor:
─ Plug the jumper on both contacts directly next to "ON" to switch on the terminating resistor.
─ Plug the jumper on both contacts that point away from "ON" to switch off the terminating resistor.
On the circuit board are two jumpers for the terminating resistors. One is for the terminating resistor in the CAN bus network, the other for the terminating resistor in the Modbus network. To avoid errors, bother jumpers should always be inserted jointly and consistently.
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Terminating resistor jumper |
Plug in both jumpers for the terminating
resistor:
─ Plug in the jumper on both contacts directly under "OFF" to switch off the terminating resistor.
─ Plug in the jumper on both contacts in the centre and to the right of "OFF" to switch on the terminating resistor.
For further details about the terminating resistor: See Setting the terminating resistor in the CAN bus network.
Setting the device address automatically:
If the base address is set on the LED matrix display, the correct device address is automatically set by the PLC. See also Overview: Device addresses, page .
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Jumper "+1" |
Jumper "+2" |
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Socket for CAN bus line |
Plug jumper "+1" into position "+1" (jumper
plugs directly under the "+1" labelling).
Plug jumper "+2" into position "+2" (jumper
plugs directly under the "+2" labelling).
● Both jumpers together result in the value "+3".
This corresponds to the base address "100". This ensures the correct device address is automatically set by the PLC.
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Jumper "A" |
Plug in jumper "A" (jumper plugs in directly
under the "A" labelling).
This corresponds to the base address "100".
The position of the other jumpers for the address assignment is irrelevant. If jumper "A" is plugged in for the automatic address assignment, this has priority over the jumpers "+1" and "+2".
Switch the crane on.
● On the LED matrix display, the device address "JP3=ID64" (at 60 mm LED matrix display) or "JP4=ID64" (at 120/180 mm LED matrix display) (corresponds to device address 100) is displayed once (when switching on directly after reconnecting the jumper).
● The PLC converts the base address of the LED matrix display to the expected device address.
If several LED matrix displays (e.g at several trolleys) must be replaced, the LED matrix displays must be plugged in one after the other in the order crane, then Trolley 1, then on Trolley 2, so that the automatic address assignment functions.
Setting device address manually:
The device address on the LED matrix display can also be directly corrected manually. See also Overview: Device addresses, page .
The device address is set with the jumpers "+1" and "+2".
Plug the jumpers "+1" and "+2" into the
desired positions.
The numerical values of both jumpers are calculated together and result in a number for the corresponding device address.
The jumper is activated if it is directly under the labelling. It is deactivated if it is sideways next to the labelling.
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Jumper "+1" |
Jumper "+2" |
Result |
Corresponding device address |
Display |
LED matrix display |
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Off (=0) |
Off (=0) |
0 |
101 |
ID=65 |
Crane |
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On (=1) |
Off (=0) |
1 |
102 |
ID=66 |
Trolley 1 |
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Off (=0) |
On (=2) |
2 |
103 |
ID=67 |
Trolley 2 |
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On (=1) |
On (=2) |
3 |
100 |
ID=64 |
Base address (see above) |
The device address is set with the jumpers "+1", "+2" and "A".
Deactivate jumper "A" (plug in at the side
next to the labelling).
Plug the jumpers "+1" and "+2" into the
desired positions.
The numerical values of both jumpers are calculated together and result in a number for the corresponding device address.
If jumper "A" is plugged in for the automatic address assignment, this has priority over the jumpers "+1" and "+2".
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Jumper "+1" |
Jumper "+2" |
Jumper "A" |
Result |
Corresponding device address |
Display |
LED matrix display |
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Off (=0) |
Off (=0) |
Off |
0 |
101 |
ID=65 |
Crane |
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On (=1) |
Off (=0) |
Off |
1 |
102 |
ID=66 |
Trolley 1 |
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Off (=0) |
On (=2) |
Off |
2 |
103 |
ID=67 |
Trolley 2 |
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On (=1) |
On (=2) |
Off |
3 |
104 |
ID=68 |
Trolley 3 |
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(irrelevant) |
(irrelevant) |
On |
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100 |
ID=64 |
Base address (see above) |
Switch the crane on.
● On the LED matrix display, the device address "JP3=ID64" to "JP3=ID67" (at 60 mm LED matrix display) or "JP4=ID64" to "JP4=ID68" (at 120/180 mm LED matrix display) is displayed once (during switching on directly after reconnecting the jumper).
Delete automatically set device address:
If the device address was automatically set by the PLC, it can be manually deleted if necessary, in order for it to be reset by the PLC.
With the crane switched on, remove the CAN
bus line from the LED matrix display.
With 60 mm LED matrix display: Remove
one of the jumpers "+1" or "+2" and plug into one of the other positions.
With 120/180 mm LED matrix display: Remove jumper "A".
Plug CAN bus line into the LED matrix
display.
● The LED matrix display switches on.
● On the LED matrix display, the newly set device address is displayed once (during switching on directly after reconnecting the jumper).
Remove CAN bus line from the LED matrix
display again.
With 60 mm LED matrix display: Remove
jumper "+1" and plug into the position "+1", and also remove jumper "+2" and
plug into the position "+2".
With 120/180 mm LED matrix display: Remove jumper "A" and plug into position "A".
Plug CAN bus line into the LED matrix
display.
● The PLC doesn't find the LED matrix display at the expected device address, instead it finds a LED matrix display with a base address.
● On the LED matrix display, the device address "JP3=ID64" (at 60 mm LED matrix display) or "JP4=ID64" (at 120/180 mm LED matrix display) (corresponds to device address 100) is displayed once (when switching on directly after reconnecting the jumper).
● The PLC converts the base address of the LED matrix display to the expected device address.
