ProSoft Technology PS69-DPS - Manual (Page 59)

PS69-DPS ♦ CompactLogix or MicroLogix Platform Diagnostics and Troubleshooting
Profibus DP Slave Communication Module User Manual
ProSoft Technology, Inc. Page 59 of 108
May 9, 2014
Behavior Significance Typical Reason Help
MicroLogix
Fault LED is flashing Red
No communication with the
PS69 module (or other
modules)
Modules slot number in
RSLogix program does not
match with the physical slot
of the module
Configured Vendor ID /
Module ID / Input / Output /
Configuration array size is
wrong
Check modules slot number
in RSLogix project
Compare configured Input /
Output size / Vendor ID
/Module ID with required
values
PS69-DPS
COM LED is off SYS LED
Flashing irregular green Configuration missing or
faulty No configuration or faulty
stored Check initialization values of
the configuration array
Check the value "LastError"
in SlaveStatusField to
determine the error reason
Watchdog expired Watchdog value in
configuration is smaller then
RPI (Requested
PackedIntervall)
Increase Watchdog value in
configuration array
Module has to be reset
PS69-DPS
COM LED is off and SYS
LED flashing cyclic fast
green
Application is not ready PLC is not in RUN Mode.
PLC application has set the
NRDY bit.
PLC has no I/O
communication with the
module
Bring PLC into RUN Mode.
Check that the PLC
application has deleted the
NRDY bit.
Check PLC’s I/O LED
Master and Slave
Configuration mismatch The configuration of the
master which wants to
communicate with the
module don't match to the
configuration of the slave
module
Use the ExtStaInfo in
SlaveStatusField to compare
what the expected
configuration is from the
master and the modules
configuration
Network problem No physical network
connection
No master present who
wants to communicate
Check if the slave module is
properly connected to the
PROFIBUS Network
Check if bus activity can be
detected in "IrqCounter" in
SlaveStatusField
Check if a master is present
who wants to communicate
to the module and check if
the slave address is correct
Master output data can not
be found in RSLogix
program Input array mismatch Configured input size in
RSLogix too small
Check if the configured input
size in RSLogix covers the
mandatory size of 136 byte
status data plus the size of
the outputs configured.
Inputs are not transferred to
Master although PROFIBUS
is running
Output array mismatch Configured output size in
RSLogix too small
Check if the configured
output size in RSLogix
covers the mandatory size of
4 byte status data plus the
configured PROFIBUS input
data