Specifications

Allen-Bradley DF1 Driver Help
Serious
Possible Cause:
There is bad cabling connecting the devices causing noise and checksum errors.
Solution:
Inspect cabling between the Host PC and the device.
Unable to read data starting at <start address> on device '<device name>'.
Slave sink/source full
Error Type:
Serious
Possible Cause:
The slave device cannot accept anymore requests from the master. The client may be requesting data too fast.
Solution:
The driver will automatically poll and re-poll the slave to empty its source and in turn make room for responses
from requests previously in the full sink. If this error occurs too often, decrease the update rate on suspected
tags.
Unable to read function file <fun. file element> on device '<device name>'.
Slave sink/source full
Error Type:
Serious
Possible Cause:
The slave device cannot accept anymore requests from the master. The client may be requesting data too fast.
Solution:
The driver will automatically poll and re-poll the slave to empty its source and in turn make room for responses
from requests previously in the full sink. If this error occurs too often, decrease the update rate on suspected
function file tags.
Unable to read data starting at <start address> on device '<device name>'.
Slave source empty
Error Type:
Serious
Possible Cause:
The slave device does not have a response prepared for the data request starting at <start address>. The slave
re-poll delay may be set to short.
Solution:
The driver will automatically poll and re-poll the slave in seek of a poll response. If this error occurs too often,
increase the slave re-poll delay on the given channel.
Unable to read function file <fun. file element> on device '<device name>'.
Slave source empty
Error Type:
Serious
Possible Cause:
The slave device does not have a response prepared for the request of function file <fun. file element>. The slave
re-poll delay may be set to short.
Solution:
The driver will automatically poll and re-poll the slave in seek of a poll response. If this error occurs too often,
increase the slave re-poll delay on the given channel.
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