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447
DeviceNet I/O Link Units
Section 7-7
LED Indicators
Handling Unit Errors
If a communications error occurs while the slave is on standby, the appropri-
ate bit in word A436 will turn ON. The appropriate bit is determined by the
order in which the Expansion Units and Expansion I/O Units are connected.
The Unit nearest to the CPU Unit uses A436.00. Use these flags in the pro-
gram when it is necessary to detect errors.
Operating Procedure
Indicator
Color
Status
Condition
Meaning
MS
Green
Lit
Normal status
• Normal status
Flashing
Not set
• Switch settings being read
Red
Lit
Fatal error
• Fatal hardware error
(watchdog timer)
Flashing
Nonfatal error
• Incorrect switch settings.
---
OFF
Power not supplied.
• Power not supplied.
• Waiting for initialization to
start.
• Reset in progress.
NS
Green
Lit
Online and commu-
nications estab-
lished.
• Network normal and com-
munications established.
Flashing
Online and commu-
nications not estab-
lished.
• Network normal and com-
munications not estab-
lished.
Red
Lit
Fatal communica-
tions error
Unit has detected network
status preventing normal
communications.
• Node number duplications
• Bus OFF detected.
Flashing
Nonfatal communi-
cations error
• Communications timeout
or communications error
for one or more slaves.
---
OFF
Online and power
OFF.
Waiting for node number
check by master.
• Switch setting error.
• Power not supplied.
Connect the Unit.
Determine the node
number of the DeviceNet
I/O Link Unit and set the
rotary switches.
Wire the DeviceNet
transmission path.
•
Connect the DeviceNet I/O Link Unit.
•
The node number should be a unique number between
0 and 63.
•
Use the DIP switch to set the DeviceNet I/O Link Unit fs
baud rate and the status of output data when a
communications error occurs.
•
Connect the DeviceNet I/O Link Unit to a DeviceNet
transmission path.
Содержание CP1H-CPU - 05-2006
Страница 1: ...OPERATION MANUAL CP1H CPU Unit SYSMAC CP Series CP1H X40D CP1H XA40D CP1H Y20DT D Cat No W450 E1 02...
Страница 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Страница 3: ...iv...
Страница 11: ...xii TABLE OF CONTENTS...
Страница 15: ...xvi...
Страница 19: ...xx...
Страница 31: ...xxxii Conformance to EC Directives 6...
Страница 71: ...40 Function Blocks Section 1 5...
Страница 133: ...102 Computing the Cycle Time Section 2 7...
Страница 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Страница 411: ...380 Clock Section 6 8...
Страница 519: ...488 Replacing User serviceable Parts Section 10 2...
Страница 527: ...496 Standard Models Appendix A...
Страница 535: ...504 Dimensions Diagrams Appendix B...
Страница 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Страница 659: ...628 PLC Setup Appendix G...
Страница 665: ...634 Index work words 159 write protection 370...
Страница 667: ...636 Revision History...