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Note all SR words and bits are writeable by the user. Be sure to check the func-
tion of a bit or word before attempting to use it in programming.
Word(s)
Bit(s)
Function
236
00 to 07
Node loop status output area for operating level 0 of SYSMAC NET Link System
08 to 15
Node loop status output area for operating level 1 of SYSMAC NET Link System
237
00 to 07
Completion code output area for operating level 0 following execution of
SEND(90)/RECV(98) SYSMAC LINK/SYSMAC NET Link System
08 to 15
Completion code output area for operating level 1 following execution of
SEND(90)/RECV(98) SYSMAC LINK/SYSMAC NET Link System
238 and 241
00 to 15
Data link status output area for operating level 0 of SYSMAC LINK or SYSMAC NET Link
System
242 and 245
00 to 15
Data link status output area for operating level 1 of SYSMAC LINK or SYSMAC NET Link
System
246
00 to 15
Reserved by system
247 and 248
00 to 07
PC Link Unit Run Flags for Units 16 through 31 or data link status for operating level 1
08 to 15
PC Link Unit Error Flags for Units 16 through 31 or data link status for operating level 1
249 and 250
00 to 07
PC Link Unit Run Flags for Units 00 through 15 or data link status for operating level 0
08 to 15
PC Link Unit Error Flags for Units 00 through 15 or data link status for operating level 0
251
00
Remote I/O Error Read Bit
Writeable
01 and 02
Not used
Writeable
03
Remote I/O Error Flag
04 to 06
Unit number of Remote I/O Unit, Optical I/O Unit, or I/O Terminal with error
07
Not used
08 to 15
Word allocated to Remote I/O Unit, Optical I/O Unit, or I/O Terminal with error (BCD)
252
00
SEND(90)/RECV(98) Error Flag for operating level 0 of SYSMAC LINK or SYSMAC NET
Link System
01
SEND(90)/RECV(98) Enable Flag for operating level 0 of SYSMAC LINK or SYSMAC NET
Link System
02
Operating Level 0 Data Link Operating Flag
03
SEND(90)/RECV(98) Error Flag for operating level 1 of SYSMAC LINK or SYSMAC NET
Link System
04
SEND(90)/RECV(98) Enable Flag for operating level 1 of SYSMAC LINK or SYSMAC NET
Link System
05
Operating Level 1 Data Link Operating Flag
06
Rack-mounting Host Link Unit Level 1 Communications Error Flag
07
Rack-mounting Host Link Unit Level 1 Restart Bit
08
Peripheral Port Restart Bit
09
RS-232C Port Restart Bit
10
PC Setup Clear Bit
11
Forced Status Hold Bit
12
Data Retention Control Bit
13
Rack-mounting Host Link Unit Level 0 Restart Bit
14
Not used.
15
Output OFF Bit
253
00 to 07
FAL number output area (see error information provided elsewhere)
08
Low Battery Flag
09
Cycle Time Error Flag
10
I/O Verification Error Flag
11
Rack-mounting Host Link Unit Level 0 Communications Error Flag
12
Remote I/O Error Flag
13
Always ON Flag
14
Always OFF Flag
15
First Cycle Flag
SR Area
Section 3-4