47
Sample Ladder Programs
Section 4-5
4-5-3
Sample Ladder Program Processing Flow
The following flowchart shows the flow of processes in the sample ladder pro-
grams.
END
Initial processing
# Executed automatically.
Connection open processing
Connection open
successful?
Abnormal completion signal
M101 turns ON and the error code
is stored in the completion
status area (D101).
Abnormal completion signal
M301 turns ON and the error
code is stored in the completion
status area (D3001).
Abnormal completion signal
M501 turns ON and the error
code is stored in the completion
status area (D5001).
Abnormal completion signal
M201 turns ON and the error
code is stored in the completion
status area (D2001).
Monitor message creation
BUFSND instruction execution
Message
communication
successful?
Request message
communications
processing
Status
monitor
processing
Connection
open
processing
Response
message transmission
processing
Connection
close
processing
BUFRCV instruction execution
Message
reception
successful?
Connection close processing
Connection close
successful?
Summary of Contents for NE1A-EDR01
Page 1: ...OPERATION MANUAL Cat No Z912 E1 01 NE1A Series NE1A EDR01 EtherNet IP DeviceNet Router...
Page 2: ...NE1A Series EtherNet IP DeviceNet Router NE1A EDR01 Operation Manual Produced July 2007...
Page 3: ...iv...
Page 7: ...viii TABLE OF CONTENTS...
Page 9: ...x...
Page 13: ...xiv...
Page 41: ...24 ED Router Settings Section 2 5...
Page 53: ...36 Error History Section 3 3...
Page 97: ...80 DST1 Series Monitoring Section 4 7...
Page 101: ...84 Settings from the Network Configurator Appendix B...
Page 105: ...88 Glossary...
Page 107: ...90 Revision History...