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76
Functions Common to All Slave Units
Section 6-1
6-1-5
Power Short-circuit Detection (Input)
Description
This function monitors the sensor power supply current. If the current is
50 mA or higher per input contact, a power short-circuit is detected.
The Slave Unit I/O indicator can be used to check whether a power short-cir-
cuit has been detected. When a power short-circuit is detected, a flag in a sta-
tus area in the Slave Unit turns ON to notify the Master Unit. The notification
details can be read using explicit messages. When the cause of the short-cir-
cuit is removed, the Slave Unit is automatically reset, and the power output to
the connector that had the short-circuit is turned ON again.
Setting Using the
Status Areas
Refer to bit 4 in
and to
.
6-1-6
Load Short-circuit Detection (Output)
Description
This function monitors the load current for the output section and detects an
load short-circuit if the current per contact (or common) exceeds a specific
value. When a load short-circuit is detected, all Unit outputs are turned OFF to
prevent damage to the Unit's output circuits.
The I/O power for the Unit turns OFF if a short-circuit is detected for even just
one of the contacts being used.
When a load short-circuit is detected, a flag in a status area in the Slave Unit
turns ON to notify the Master Unit. The notification details can be read using
explicit messages.
When the cause of the short-circuit is removed, the Slave Unit is automatically
reset, and the power output to the connector for which the short-circuit was
detected is turned ON again.
Checking Using the
Status Areas
Refer to bit 4 in
and to
.
Summary of Contents for ERT1 Series
Page 1: ...OPERATION MANUAL Cat No W481 E1 02 EtherNet IP Slave Units ERT1 Series...
Page 2: ......
Page 3: ...ERT1 Series EtherNet IP Slave Units Operation Manual Revised November 2010...
Page 4: ...iv...
Page 6: ...vi...
Page 8: ...viii...
Page 14: ...xiv...
Page 58: ...38 Recommended Network Devices Section 2 2...
Page 62: ...42 Basic Specifications of Slave Units Section 3 1...
Page 78: ...58 Screw less Clamp Terminals Section 4 2...
Page 92: ...72 Environment resistive Slave Units Section 5 2...
Page 102: ...82 Maintenance and Replacement Section 7 3...
Page 106: ...86 Revision History...
Page 107: ......