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Reaction Time
Section 9-4
3. Local Input - Remote Output
4. Remote Input - Remote Output
Reaction Time Calculation
Note
If an output from a function block is fed back to the input side of the same
function block, the cycle time of the NE1A-series Controller must be added to
the reaction time for the safety chain.
Reaction Time Calculation Examples
■
Example 1: Local Input – Local Output
The following example shows calculating the reaction time from a local input
to a local output for the NE1A-SCPU01 configuration shown in the illustration.
NE1A-SCPU01 configuration:
• Program: 1 AND (2 inputs)
• Standard Slaves: 2 connections
• Safety Masters: None
• Safety Slaves: None
NE1A Series
Safety I/O Terminal
Actuator
Network
reaction
time (G)
Local input/
remote output
reaction
timeC (C)
Sensor/switch
reaction time
Output
reaction
time (F)
Actuator
reaction time
Safety sensor/
switch
Item
Formula
A
Local input/local output reaction time (ms) at NE1A-
SCPU01
= ON/OFF delay time + I/O refresh cycle
+ NE1A-SCPU01 cycle time
×
2 + 2.5
B
Remote input/local output reaction time (ms) at
NE1A-SCPU01
= NE1A-SCPU01 cycle time + 2.5
C
Local input/remote output reaction time (ms) at
NE1A-SCPU01
= ON/OFF delay time + I/O refresh cycle
+ NE1A-SCPU01 cycle time
×
2
D
Remote input/remote output reaction time (ms) at
NE1A-SCPU01
= NE1A-SCPU01 cycle time
E
Input reaction time (ms) at Safety I/O Terminal
= ON/OFF delay time + Input reaction time
F
Output reaction time (ms) at Safety I/O
Terminal
= Output reaction time
G
Network reaction time (ms)
= Result of Network Configurator calculation
NE1A Series
Safety I/O Terminal
Safety I/O Terminal
Actuator
Network
reaction
time (G)
Remote
input/remote
output
reaction
times (D)
Input
reaction
time (E)
Network
reaction
time (G)
Sensor/switch
reaction time
Actuator
reaction time
Safety sensor/
switch
Output
reaction
time (F)
DeviceNet
NE1A-SCPU01
Actuator
Cycle time = 4 ms
I/O refresh cycle = 4 ms
Switch
Summary of Contents for NE1A-SCPU01 - 07-2009
Page 3: ...iv...
Page 9: ...x TABLE OF CONTENTS...
Page 11: ...xii...
Page 15: ...xvi...
Page 70: ...35 Installation Section 3 1 Top Top Bottom Bottom...
Page 72: ...37 Installation Section 3 1 3 1 3 Dimensions and Weight Dimensions NE1A SCPU01 V1...
Page 85: ...50 Wiring Section 3 2...
Page 123: ...88 Explicit Message Communications Section 4 7...
Page 141: ...106 Safety Outputs Section 5 4...
Page 257: ...222 Connection Status Tables Section 10 8...
Page 261: ...226 NE1A series Controller Replacement Section 11 2...
Page 264: ...229 Appendix A Local Input and Test Output Setting Example Local Output Setting Example...
Page 266: ...231 Appendix A Programming Example Local Input and Test Output Setting Example...
Page 267: ...232 Appendix A Local Output Setting Example...
Page 269: ...234 Appendix A Programming Example Local Input and Test Output Setting Example...
Page 270: ...235 Appendix A Local Output Setting Example...
Page 273: ...238 Appendix A Local Input and Test Output Setting Example Local Output Setting Example...
Page 275: ...240 Appendix A Programming Example Local Input and Test Output Setting Example...
Page 276: ...241 Appendix A Local Output Setting Example...
Page 289: ...254...
Page 293: ...258 Index...