4
About NE1A-series Safety Network Controllers Section 1-1
System Startup and Error Recovery Support
• The error information can be checked by using the Network Configurator
or the indicators on the front of the NE1A-series Controller.
• The NE1A-series Controller’s internal status information can be moni-
tored from a Standard PLC by allocating the information in the Standard
Master. In the same way, monitoring with a Safety PLC is possible by allo-
cating information in the Safety Master.
• An NE1A-series Controller's internal status information can be allocated
in an EtherNet/IP originator and monitored by a Standard PLC. (Possible
only for Controllers that support EtherNet/IP.)
Access Control with a Password
• The NE1A-series Controller’s configuration data is protected by a pass-
word set in the Controller.
• The Network Configurator controls access to each project file with a pass-
word.
1-1-3 Functional Overview
Function Overview Details
Logic Operations
Logic operations Basic logic operations, such as AND and OR, and function blocks,
such as Emergency Stop (ESTOP) and Safety Gate Monitoring
(SGATE), are supported.
In the Pre-Ver. 1.0 Controllers, up to 128 logic functions and function
blocks can be used in programming.
In the Controllers with unit version 1.0 or later (including Controllers
that support EtherNet/IP), up to 254 logic functions and function
blocks can be used in programming.
SECTION 8
Safety I/O
I/O comments The user can store any name for each I/O terminal using a maximum
of 32 characters (ASCII).
7-1-1
I/O power monitoring The NE1A-series Controllers can detect whether I/O power is
supplied within the normal voltage range.
7-1-2
Safety inputs The NE1A-SCPU01(-V1)(-EIP) supports a 16 safety inputs.
The NE1A-SCPU02(-EIP) supports a 40 safety inputs.
7-2
Input circuit diagnosis Test pulses are used to check the NE1A-series Controller’s internal
circuits, external devices, and external wiring.
Input ON/OFF delays Input time constants between 0 and 126 ms in multiples of the
Controller’s cycle time can be set for Controller’s inputs.
Setting input ON/OFF delays helps reduce influence from chattering
or external noise.
Dual Channel Mode Time discrepancies in changes in data or input signals between two
paired local inputs can be evaluated.
Test pulse outputs The NE1A-SCPU01(-V1)(-EIP) supports four independent test out-
puts.
The NE1A-SCPU02(-EIP) supports eight independent test outputs.
These are normally used in combination with safety inputs.
They can also be set for use as signal output terminals.
7-3
Current monitoring for
muting lamp (T3, T7 ter-
minal only)
The NE1A-SCPU01(-V1)(-EIP) can detect a disconnection at the T3
terminal.
The NE1A-SCPU02(-EIP) can detect disconnections at the T3 and
T7 terminals.
Overcurrent detec-
tion/protection
An output is blocked when an overcurrent is detected to protect the
circuit.
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