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Memory Areas Appendix B
Operating Level Status: SR 252 (See pages 189, 300.)
AR Area
Duplicate Operating Levels/Refresh Error: AR 00 (See page 299.)
Routing Table Error/Unit Restart Bits: AR 01 (See page 299.)
Data Link Start Bits (See page 154.)
Network Participation Status: AR 08, AR 09, AR 12, AR 13 (See pages 190, 299.)
Operating level 1
Operating level 0
Network Instruction Enable Flag
0: Disabled (operating)
1: Enabled (not operating)
Network Instruction Error Flag
0: Normal completion
1: Error
Network Instruction Enable Flag
0: Disabled (operating)
1: Enabled (not operating)
Network Instruction Error Flag
0: Normal completion
1: Error
1: Local node data link participating
1: Local node data link participating
A bit will be turned ON (1) the
next cycle when
1) The same operating level is
set more than once or
2) A refresh error occurs
between the Controller LInk
Unit and the PLC's CPU Unit.
Operating level 1
Operating level 0
Operating level 1
Operating level 0
1: Routing table error
Resets the Controller Link Unit.
Turn ON (1) and then OFF (0)
to reset Unit.
Operating level 1
Operating level 0
Data link Start Bit for level 0 (AR 0700)
Start: Changed from OFF to ON or set to ON
when power is turned on
Stop: Changed from ON to OFF
Data link Start Bit of level 1 (AR 0704)
Start: Changed from OFF to ON or set to ON
when power is turned on
Stop: Changed from ON to OFF
15 14 13 12 11 10 9 8 765 4 3 210
AR 07
Operating level 0
AR 08
AR 09
Operating level 1
AR 12
AR 13
The numbers in the squares indicate node addresses.
The corresponding node participation status is as follows:
0: Not part of network
1: Part of network