Issue 1
8-10 HART
®
device operations K0460 - [EN] English
8.4 Failed to find a
device
The following is a checklist of what to do.
• When using the DPI620-IS to supply power, make sure that the
internal HART
®
resistor is turned on.
• Check the preferences option and set this to find first, then
re-start the application. This will ensure that SDC625 finds a
device that is not at poll address 0.
• When supplying power to the transmitter, check that the loop
current measured on channel 2 is between 4 and 20 mA. In
alarm conditions it is possible for it to be parked at 21.5 mA or
3.9 mA. However, if the current measured by channel 2 is far
from these values, there must be a configuration fault.
• If the transmitter is powered externally with an external HART
®
resistor, ensure that channel 2 has been turned off.
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