58
Data Link Status
Section 4-9
Program Example
Checking Data Link
Participation Status
To check participation of any one node in the data links, take an AND of a NO
condition of the Local Node Data Link Active Flag and the Communications
Error Flag for each node as shown below.
Checking for Data Link
Errors in any Node
To check for an error in any node in the data links, take an OR of a NC condi-
tion of the Local Node Data Link Active Flag and the Communications Error
Flags for all nodes.
Outputting Local Node
Errors
The following example program section shows one way to output and error
signal when data links stop for the local node.
Local Node Data
Link Active Flag
Node A Communications
Error Flag
Node B Communications
Error Flag
Node n Communications
Error Flag
Node A: Participating in data links
Node B: Participating in data links
Node n: Participating in data links
Node A
Data Link Active Flag
Node B
Data Link Active Flag
Node n
Data Link Active Flag
Local Node Data
Link Active Flag
Node A Commu-
nications Error Flag
Node B Commu-
nications Error Flag
Node n Commu-
nications Error Flag
Data link error in one
or more nodes
Local Node Data
Link Active Flag
Communications
Error Flag
Bit indicating data link
error in local node
Bit indicating data link
error in local node
Summary of Contents for CS1W-SLK11-21 - 06-2004
Page 1: ...Cat No W367 E1 02 SYSMAC CS1W SLK11 21 SYSMAC LINK Units...
Page 2: ...CS1W SLK11 21 SYSMAC LINK Units Operation Manual Revised June 2004...
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Page 170: ...153 Appendix B Dimensions CS1W SLK11 Optical SYSMAC LINK Unit Unit mm...
Page 171: ...154 Dimensions Appendix B CS1W SLK21 Coaxial SYSMAC LINK Unit Unit mm...
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