11
LED display
Part
Display
name
Status
Operation
Power supply
section
POWER
Power supply
display
Lights green: Power is on.
Server section
RUN
Operation
display
Lights green: MODE/STOP/RUN switch is set to RUN position (in
normal operation).
Off: MODE/STOP/RUN switch is set to STOP position (in the IP
address display mode).
CF CARD
Memory card
status
Lights green: Memory card is accessible.
Blinks green: Memory card is being removed.
(RESET/SELECT switch is held to SELECT position.)
Off: Memory card is ready to be removed.
MODE
Operation
mode
Lights green: During standard operation
Lights orange: During startup in hardware self-diagnostic mode
ERR.
Error display
Lights red: At the time of occurrence of a battery error
Blinks red: During initial startup after purchase
During an electric outage due to battery exhaustion
STA.
Operation
status
Blinks green: During startup after the power is turned on
Lights green: Startup is completed.
100M
LAN
communication
Lights green: Connected at 100Mbps
Off: Connected at 10Mbps
SD/RD
Lights green: Connected to LAN
Off: Not connected to LAN
Blinks: LAN communication in progress.
CC-Link
communication
section
RUN
Operation
status of
CC-Link
communication
Lights green: CC-Link communication section is normally running.
Off: CC-Link communication section is under abnormal conditions.
MST
CC-Link master
Lights green: During normal operation
(This LED lights green all the time because the product stays in
CC-Link master mode during operation.)
SD
CC-Link
communication
status
Blinks green: Transmitting through CC-Link communication
RD
Blinks green: Receiving through CC-Link communication
L RUN
CC-Link link
status
Blinks green: Linking through CC-Link communication
Off: No link through CC-Link communication
S MST
CC-Link
standby master
Off: During normal operation
(This light is off all the time because the product stays in CC-Link
master mode during operation.)
L ERR.
Error status of
CC-Link
communication
Blinks red at regular intervals: The switch on the CC-Link
communication section is operated with power on.
Blinks red at irregular intervals: Termination resistance is not installed.
(The unit or CC-Link dedicated cable is being
influenced by noise.)
Lights red: The settings don’t correspond to the connected
equipment.
ERR
Error status
Lights green: Master stations overlap on the same line.
(This equipment is used with fixed CC-Link master mode)
The cable is disconnected, or being affected by noise.
Blinks red: The station number of the remote station is duplicated.
Contact output
section
0 to 9, A to F
Contact output
status
Off: Contact output is open.
Lights red: Contact output is closed.
LAN interface CH1, CH2 (100BASE-TX/10BASE-T)
Item
Specifications
Communication
specifications
Ethernet (10BASE-T/100BASE-TX)
Communication
speed
10 Mbps, 100 Mbps
Communication
media
UTP (Unshielded twisted pair cable)
Max. segment
length
100 m (to hub)
MODE/STOP/RUN switch
Item
Specifications
STOP
Turning the product on or resetting it with the switch in the “STOP” position
displays the IP address currently specified for the product.
(
See “7.2 Checking IP address”.)
RUN
Usually use the product with the switch in the “RUN” position.
Summary of Contents for MES3-255C-EN
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