Dynisco PT460DN, Operating Manual

Page: 35 / 42

35
TROUBLESHOOTING
6) Always insure that mounting hole is clear of frozen
polymer or any other obstruction before mounting the
transmitter
7) Check Flexible Capillary for any visible damage like
pinched, crushed, over-extended armor on the capillary
No Communications 1) Check wiring, particularly continuity and polarity of the
CAN-H and CAN-L connections to the Scanner. If these are
reversed it will not communicate
2)Make sure 24 volts is present on V+ and V+ and that the
power supply for the bus is of sufficient ampere rating for
the amount of devices on the network
3) Using a DeviceNet configuration tool, check to see if
all devices on the network are set to the same baud rate
including the Scanner card
4) Using a DeviceNet configuration tool, check to see if
there are any duplicate Node Addresses (MAC-ID) on the
network, if so assign a new address to one of the
conflicting devices
5) Ensure that the network is configured correctly and the
Scanlist has downloaded correctly to the DeviceNet
Scanner
6) Verify that the EDS file in use is correct and or the latest
version (Available on the Dynisco website
www.dynisco.com )
7) Verify that the maximum line length for the baud rate
selected is not exceeded (See chart below)
Baud Rate Baud Rate
Baud Rate Baud Rate Baud Rate
125K 125K
125K 125K 125K
250K 250K
250K 250K 250K
500K 500K
500K 500K 500K
Thick Trunk 500m (1640 ft) 250m (820 ft) 100m (328 ft)
Thin Trunk 100m (328 ft) 100m (328 ft) 100m (328 ft)
Max Drop 6m (20 ft) 6m (20 ft) 6m (20 ft)
Cumulative Drop 156m (512 ft) 78m (256 ft) 39m (128 ft)
8) Ensure that both ends of the DeviceNet network trunk
line are correctly terminated with 121 ohm resistors.
9) Ensure that no drop line devices on a trunk network
have termination fitted
10) Replace faulty Transmitter with one of a like model
and see if problem still exists, if so the problem resides in
the network