LED display
4-1
4. LED display
LED
symbol
Color
Name
: Lit/flashing
: Unlit
RUN
Green B2G78-E1
status
Lit
Normally operating
Hardware error or watchdog
timer error has occurred
LINK
Green Transmission
active
Flashing Normally
operating
SET
Green Automatic
address
recognition
operating
Lit Automatic
address
recognition operating
Normally operating
RDY
Green B2G78-E1
status
Lit Normally
operating
ERR
Red Master
unit
alarm status
Lit
DP, DN disconnection
No slave unit response
Normally operating
Slow flashing
(every second)
Short-circuit between
DP-DN
Quick flashing
(every 0.2 seconds)
24V DC is not supplied
or voltage is low.
ALM
Orange Slave unit
status
Lit
I/O disconnection, I/O
short-circuit, address
redundancy, sensing
level drop etc., are
detected
Normally operating
LINK.E
Orange Ethernet link
status
Lit
LAN cable is correctly
connected
ACT
Green Ethernet
BUS
status
Flashing Packet
detection
RDY LED
LINK.E LED
ACT LED
ERR LED
ALM LED
RUN LED
LINK LED
SET LED