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Functions of General-purpose Slaves and Environment-resistive Slaves Section 4-3
â– Manual Recovery Mode
When the cause of the short-circuit is removed and the corresponding contact
is correctly rewired, the short-circuit protection status is cleared by turning ON
the I/O power or the communications power. When the I/O power is OFF or
the output is OFF, the short-circuit protection status is maintained, so the
shorted locations can be easily identified from the indicator status during on-
site maintenance.
I/O Indicator Status when Short-circuit Detected
The box indicates the number of the corresponding connector.
Note Refer to SECTION 6 Environment-resistive Slaves for the position of the
actual indicator.
SHT1 Indicator Status When Short-circuit Is Detected for a Sensor Connector Terminal I/O Unit
This indicator lights red when a short-circuit error is detected.
I/O Indicator Status When Short-circuit Is Detected for a Screw-less Clamp Terminal I/O Unit
â– Automatic Recovery Mode
When the wiring has been corrected to remove the short-circuit, the short-cir-
cuit protection status will automatically be cleared. The short-circuit protection
status will also be cleared automatically when the output is turned OFF. The
output must remain ON to check the Status Area and indicators.
â– Manual Recovery Mode
After the wiring has been corrected to remove the short-circuit, the short-cir-
cuit protection status is cleared by cycling the I/O power or the communica-
tions power. When the I/O power or the output is OFF, the short-circuit
protection status will be maintained, so short-circuited locations can be easily
identified from the indicator status during onsite maintenance.
Checking Using the
DeviceNet
Configurator
The method used to check information from the DeviceNet Configurator (Ver.
2.20 or later) is described here.
Checking Shorted Devices The procedure for this checking method is the same from both the Main Win-
dow and the Maintenance Mode Window.
1,2,3... 1. Turn ON the power to the DRT2-series Smart Slave.
2. Click the right mouse button over the icon of the DRT2-series Smart Slave
to be set in the Network Configuration Window, and select Monitor.
-A
-B
OFF
Lit red.
0 to 15
Lit yellow. Lit red.
0 to 15
0 to 15
OFF Lit red.
0 to 15
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