12   Troubleshooting and Maintenance
12 - 12
GX-series EtherCAT Slave Unit User’s Manual
Encoder Input Slave Unit
Some functions are not 
reflected even after 
parameters have been 
set.
Parameters that are 
enabled at the timing that 
the count status changes 
from disabled to enabled 
were changed.
When the count is 
enabled, execute the 
count enable command 
after the count disable 
command. When the 
count is disabled, execute 
the count enable 
command.
At preset execution, 
"present value preset 
execution completion" is 
not turned ON, but 
"present value preset set 
value error" is turned ON.
It is attempted to preset 
with a counter value 
greater than the maximum 
Circular Counter value.
Reset the preset 
command value to equal 
to or less than the 
maximum Circular 
Counter value and 
execute the preset again.
Moreover, "present value 
preset set value error" is 
turned OFF when the 
present value internal 
reset is executed or 
external reset is 
generated.
Slave Unit type Symptom Cause Measures