Toshiba V Series User Manual page 109

LED
STN
ONL
SCAN
Mode
Online
Offline
Standby
Rundown OFF
LED
RUN Unit board
operation status
ALM Module failure
LP01/LP03 output will be kept in a hold state if a transmission error occurs.
6F8C1005
Table 4-3 S20LP Indicators
Indication
Station hardware status
Operation status
(redundancy)
Scan status
Table 4-4 Station Mode Indications by S-20LP LED indicators
STN ONL SCAN
ON ON ON
OFF
ON OFF OFF
ON Blinking OFF
Blinking Blinking Station address setting error
(Simultaneous
blink)
Blinking OFF
Blinking Blinking Watchdog error
(Alternative
blinking)
Table 4-5 LP01/LP02/LP03/LP04 LED Indications
Indication ON Conditions
ON Normal
OFF Module failure
(ROM/RAM error)
ON Initializing
Blinking ADC error
MV readback error
(LP01/LP03 only)
24V power drop
OFF Normal
4.1 Indications of Operation Status LEDs
ON Conditions
ON Normal
OFF Self-diagnosis error upon power-on
Too frequent interruptions
Station program out of control
Station address setting error
ON Online (system online)
OFF Offline (standby)/Rundown
ON Scan transmission
OFF No scan transmission
Remarks
Scan transmission enabled
Scan transmission disabled
1. Transmission information is not stored on EEPROM at
start
2. Standby start is specified in transmission information.
3. CPU (L1PU11H) board error
Java timeout
Turn power back on to restart the
system. If it fails to restart normally,
replace the LP01/LP02/LP03/LP04
module and restart the system.
Turn power back on to restart the
system. If it fails to restart normally,
replace the LP01/LP02/LP03/LP04
module and restart the system.
Supply 24 VDC to the LP01/LP02/
LP03/LP04 module.
Remedy
−
−
Remedy
−
−
−
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