220
Startup Time Section 11-3
11-3 Startup Time
Initialization Time
The NE1A-series Controller performs initialization when the power is turned
ON. During initialization, the Controller performs self-diagnosis of the hard-
ware that is required to execute safety functions. The following table shows
the times required to complete initialization from when the power is turned
ON.
Time Until Start of Program Execution Depending on Unit Version
Unit Version 1.0
Unit Version 2.0
Note (1) With NE1A-series Controllers with unit version 2.0 (including Controllers
that support EtherNet/IP), an online delay time of 5 s is added after the
initialization has been completed to allow time for other devices to start.
(2) After the initialization has been completed, the NE1A-series Controller
checks for duplicated addresses on the DeviceNet network and then joins
the network (i.e., goes online). After the Controller connects to the net-
work, the NS indicator lights or flashes green. This processing takes a
maximum of 2 s.
Model Unit version Initialization time
NE1A-SCPU01 None 6 s
NE1A-SCPU01-V1 1.0 7 s
2.0 9 s
NE1A-SCPU02 1.0 9 s
2.0 9 s
NE1A-SCPU01-EIP 1.0 9 s
NE1A-SCPU02-EIP 1.0 9 s
NE1A
DST1
The NE1A-series Controller
establishes a connection with
each DST1-series Safety
Slave, and starts I/O
communications as soon as it
connects to each Slave.
MS indicator: Lit green
Start of program execution
Initialization:
SCPU01-V1: 7 s
SCPU02: 9 s
Initialization: 10 s
NE1A General Status Bit 6
(Operating Mode Flag)
Connection
established
Online processing:
3 or 4 s
Wait for
DST1 online
processing
to start
Online processing:
2 s
Connection
established
Initialization:
9 s
Initialization:
10 s
NE1A General Status
Bit 6 (Operating
Mode Flag)
Online processing:
3 or 4 s
NE1A online
processing start
delay
MS indicator: Lit green
Online wait: 5 s
Connection
established
NE1A
DST1
Connection established
Program execution start
delay time: 20 s max.
Online processing:
2 s
Program execution
start (without program
execution start delay)
Program execution
start (with program
execution start delay)
To Next Page
Loading...
