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LED Indicators and Error Processing Section 9-2
Slice I/O Units TS Green Slice I/O Unit operating nor-
mally.
---
--- Unit power supply is not being
supplied to the Unit.
Check whether power is being supplied by
the Unit power supply.
Red Unit hardware failure Turn the power OFF and then ON again.
Replace the Unit if the error recurs.
Communications error
occurred.
• Check whether the connector on the Turn-
back Cable is inserted properly.
• Check the location of the Cable to see if
the Turnback Cables and I/O lines are not
wired too near the power lines.
Error in switch settings. Check to be sure that the switch settings
are not set to an invalid setting (GRT1-AD2,
GRT1-DA2@, GRT1-TS2P, GRT1-TS2PK).
Cold junction compensator
error occurred.
Check the cold junction compensation (on
the GRT1-TS2T only).
Green Restore operation in progress Wait until the restore operation is com-
pleted.
Backup operation in progress Wait until the backup operation is com-
pleted.
Slice I/O Unit
(GRT1-TS2@)
ERR0 Red Input error occurred in input 0. Check the following items.
• Check if the sensor is disconnected, never
was connected, short-circuited, or wired
incorrectly.
• Check the terminal block to see if it is dis-
connected.
• If using a 2-wire connection, check to be
sure the SHT terminals are shorted.
• Check the sensor to see if it is of the cor-
rect input type.
• Check to see if the temperature is outside
the convertible temperature range.
Cold junction compensator
error occurred.
Check the cold junction compensation
(GRT1-TS2T only.)
--- There is no input error for
input 0. (Not lit when input
error detection is disabled
using the input error detec-
tion disable setting.)
Unit LED
name
Color Status Meaning Likely cause of error
TS
TS
TS
TS
TS
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