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Communication operation and setting
4
PARAMETERS
(8) Output terminal LF "alarm output (communication error warnings)"
During a communication error, the alarm signal (LF signal) is output by open collector output. Assign the used terminal
using Pr. 190 or Pr. 192 (output terminal function selection).
NOTE
The LF signal can be assigned to the output terminal using Pr. 190 or Pr. 192. Changing the terminal assignment may
affect the other functions. Make setting after confirming the function of each terminal.
Alarm data
Reply data
Master
Slave
Communication
Error count
(Pr. 343)
0
LF signal
Normal dataAlarm data Alarm data Normal data
Reply data
12
OFF
ON
OFF OFF
ON
Not increased
Communication error count is increased
in synchronization with leading edge
of LF signal
Turns off when normal data is received
Alarm data: Data resulting in communication error.