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13-8
13.3 Reset Function
13.3.1 What is the Reset Function?
The reset function is used to restart only the ET-LAN unit without cutting off the power supply for the
system.
Using the reset function enables the ET-LAN unit to be the operable state when an unrecoverable error
has occurred in the ET-LAN unit.
Also, using the reset function periodically when the ET-LAN unit is not communicating may help to
prevent an accidental communication error.
The no communication notification function is available which is useful to detect the time to execute the
reset function.
13.3.2 No Communication Notification Function
The no communication notification function is a function to notify that communication is not performed
longer than a specified time for the connection opened by the open processing of the ET-LAN unit.
Using the no communication notification function enables to detect the state that the ET-LAN unit is not
communicating.
Use this function when executing the reset function.
Procedure
1. Write a value in the following address of the initial information setting area (Shared memory Bank 0) to
execute the initial processing.
Initial information setting area (Bank 0)
Address
Name
Default
Setting value/Explanation
208H
No communication
connection time type
0000H
Set the base time for the no communication connection detection
timer value.
0000H :
×
2 minutes
Other than 0000H : x 6 seconds
209H
No communication
connection detection
timer value
0000H
Setting time = [Setting value (1 - FFFFH)]
×
[Base time]
- Set the time to detect a no-communication state after connection
establishment.
- The setting value of the above 208H is used as the base time.
- When the setting value is larger than 0064H,
in case of x 2 minutes : 200 minutes
in case of x 6 seconds : 10 minutes
2. When communication is not performed for the period of the specified time-out value, the flags of the
bits corresponding to each connection in the following handshake area (Shared memory Bank 0) turn on.
Handshake area
Expanded
complete
request
area
2
(Bank 0)
Address
BIT
Description of signal
366H
bit8
No communication time-out signal (Connection 1)
bit9
No communication time-out signal (Connection 2)
bitA
No communication time-out signal (Connection 3)
bitB
No communication time-out signal (Connection 4)
bitC
No communication time-out signal (Connection 5)
bitD
No communication time-out signal (Connection 6)
bitE
No communication time-out signal (Connection 7)
bitF
No communication time-out signal (Connection 8)
Summary of Contents for FP2 ET-LAN
Page 11: ...Chapter 1 Unit Functions and Restrictions ...
Page 14: ...1 4 1 1 4 Connecting to a Network AFP2790 100BASE TX 10BASE T 10BASE5 AUI AFP27901 ...
Page 24: ...1 14 ...
Page 25: ...Chapter 2 Names and Functions of Parts ...
Page 29: ...Chapter 3 Connection for LAN Cable ...
Page 37: ...Chapter 4 Confirming the Design Contents ...
Page 49: ...Chapter 5 Initialization Processing and Termination Processing ...
Page 68: ...5 20 ...
Page 69: ...Chapter 6 Open Processing and Close Processing ...
Page 84: ...6 16 ...
Page 85: ...Chapter 7 Computer Link Function ...
Page 94: ...7 10 Program example ...
Page 97: ...7 13 Example of communication data Same hierarchy communication ...
Page 100: ...7 16 Example of communication data Other hierarchy communication ...
Page 101: ...7 17 Other hierarchy communication for MEWTOCOL COM ...
Page 102: ...7 18 ...
Page 103: ...Chapter 8 Data Transfer Function ...
Page 111: ...8 9 Program example ...
Page 114: ...8 12 Example of communication data Same hierarchy communication ...
Page 117: ...8 15 Example of communication data Other hierarchy communication ...
Page 119: ...8 17 Other hierarchy communication for MEWTOCOL DAT ...
Page 120: ...8 18 ...
Page 121: ...Chapter 9 Transparent Communication Function ...
Page 137: ...9 17 Program example ...
Page 143: ...Chapter 10 Auto Connection ...
Page 155: ...10 13 Case 1 Ladder program example ...
Page 169: ...Chapter 11 E mail Function ...
Page 200: ...11 32 ...
Page 201: ...Chapter 12 Error Log Function ...
Page 203: ...12 3 Latest log block area Log block reading processing area ...
Page 219: ...Chapter 13 Troubleshooting ...
Page 224: ...13 6 13 2 4 Troubleshooting Flowchart ...
Page 225: ...13 7 ...
Page 229: ...Chapter 14 MEWTOCOL Communication Procedure ...
Page 242: ...14 14 To write to an index register ...
Page 262: ...14 34 ...
Page 263: ...Chapter 15 Specifications ...
Page 292: ...15 30 15 6 ASCII Codes ...
Page 293: ...15 31 15 7 Dimensions AFP2790 FP2 ET1 AFP27901 FP2 ET2 ...
Page 294: ......
Page 295: ...Chapter 16 Sample Program ...
Page 298: ...16 4 ...
Page 299: ...16 5 ...
Page 300: ...16 6 ...
Page 301: ...16 7 ...
Page 304: ......
Page 305: ......