Number Name Description
1) LED
indicators 1
LED
name
Description
LED status
Normal Error
RUN ON : Module is normal.
OFF: Watchdog time error has occurred.
ON OFF
ERR.
Indicates the communication status with the
stations set in the parameters.
ON : Communication error has
occurred in all stations.
Flashing : Communication error has
occurred in some stations.
OFF ON or
flashing
MST ON : Set as the master station ON OFF
TEST1 Test result indication OFF except during
test TEST2 Test result indication
L RUN ON : Data link is being executed
(host station).
ON OFF
L ERR.
ON : Communication error has
occurred (host station).
Flashing : The settings of the switches 4) to
7) were changed while the power
was ON.
OFF ON or
flashing
2) Power indictor POWER ON : 24V DC is supplied from the outside. ON OFF
RUN
ERR.
MST
TEST 1
TEST 2
L RUN
L ERR