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3-5-5 SYSMAC LINK System Data Link Settings
AR 0700 to AR 0703 and AR 0704 to AR 0707 are used to designate word alloca-
tions for operating levels 0 and 1 of the SYSMAC LINK System. Allocation can
be set to occur either according to settings from the SSS or automatically in the
LR and/or DM areas. If automatic allocation is designated, the number of words
to be allocated to each node is also designated. These settings are shown be-
low.
Operating level 0 Operating level 1 Setting
AR 0700 AR 0701 AR 0704 AR 0705
0 0 0 0 Words set externally (SSS)
1 0 1 0 Automatic LR area only
0 1 0 1 allocation DM area only
1 1 1 1 LR and DM
areas
Words per Node The following setting is necessary if automatic allocation is designated above.
Operating level 0 Operating level 1 Words per node Max. no.
AR 0702 AR 0703 AR 0706 AR 0707 LR area DM area
of nodes
0 0 0 0 4 8 16
1 0 1 0 8 16 8
0 1 0 1 16 32 4
1 1 1 1 32 64 2
The above settings are read every cycle while the SYSMAC LINK System is in
operation.
3-5-6 Error History Bits
AR 0713 (Error History Overwrite Bit) is turned ON or OFF by the user to control
overwriting of records in the Error History Area in the DM area. Turn ON AR 0713
to overwrite the oldest error record each time an error occurs after 10 have been
recorded. Turn OFF AR 0713 to store only the first 10 records that occur each
time after the history area is cleared.
AR 0714 (Error History Reset Bit) is turned ON and then OFF by the user to reset
the Error Record Pointer (DM 6000) and thus restart recording error records at
the beginning of the history area.
AR 0715 (Error History Enable Bit) is turned ON by the user to enable error histo-
ry storage and turned OFF to disable error history storage.
Refer to 3-6 DM Area for details on the Error History Area.
Error history bits are refreshed each cycle.
3-5-7 Active Node Flags
AR 08 through AR 11 and AR 12 through AR 15 provide flags that indicate which
nodes are active in the SYSMAC LINK System at the current time. These flags
are refreshed every cycle while the SYSMAC LINK System is operating.
The body of the following table show the node number assigned to each bit. If the
bit is ON, the node is currently active.
Level 0 Level 1 Bit (body of table shows node numbers)
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
AR 08 AR 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
AR 09 AR 13 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
AR 10 AR 14 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
AR 11 AR 15 49 50 51 52 53 54 55 56 57 58 59 60 61 62 * **
*Communication Controller Error Flag
**EEPROM Error Flag
External/Automatic
Allocation
AR (Auxiliary Relay) Area Section 3-5