FP3 MEWNET-TR
Chapter7-3. Page.107
103
7-3. I/O Link Control When an Error Occurs
1. Operation Monitor LED Status
x Check the LED status to judge the condition of the transmission cable, and each unit.
Note:
x
The LED status is indicated as follows.
:ON
: OFF
: Flashing (in approx. 0.2 s intervals)
: Flashing slowly (in approx. 1 s intervals)
1) When the power for each unit is turned ON
J
Normal condition
x Master A and B:
FP3/FP10S CPU
(RUN: OFF, PROG.: ON, TEST, BREAK, ERROR, BATT. and ALARM: OFF)
FP3 transmitter master unit
(COM.: Flashing, ALARM: OFF)
Master A
RUN
PROG.
TEST
BREAK
ERROR
BATT.
ALARM
COM.
ALARM
<FP3/FP10S
CPU>
<FP3
transmitter master unit>
Master B
RUN
PROG.
TEST
BREAK
ERROR
BATT.
ALARM
COM.
ALARM
<FP3/FP10S
CPU>
<FP3 transmitter master unit>
J
Abnormal conditions
LED status Steps to take
x
Communications error between master A and master B
<Master A COM.: OFF, Master B COM.: ON, Other LEDs: normal status>
Master A
RUN
PROG.
TEST
BREAK
ERROR
BATT.
ALARM
COM.
ALARM
<FP3/FP10S
CPU>
<FP3
transmitter
master unit>
Disconnection
Master B
RUN
PROG.
TEST
BREAK
ERROR
BATT.
ALARM
COM.
ALARM
<FP3/FP10S
CPU>
<FP3 transmitter
master unit>
S
Check the wiring.
7-3. I/O Link Control When an Error Occurs