Appendix EData Areas
331
Word(s) FunctionBit(s)
253 12 Remote I/O Error Flag
13 Normally ON Flag
14 Normally OFF Flag
15 First cycle
254 00 1-minute clock pulse bit
01 0.02-second clock pulse bit
02 to 06 Reserved for function expansion. Do not use.
07 Step Flag
08 to 14 Reserved for function expansion. Do not use.
15 Special Unit Error Flag (Special I/O, PC Link, Host Link, Remote I/O Master, SYSMAC NET
Link, and SYSMAC LINK)
255 00 0.1-second clock pulse bit
01 0.2-second clock pulse bit
02 1.0-second clock pulse bit
03 Instruction Execution Error (ER) Flag
04 Carry (CY) Flag
05 Greater Than (GR) Flag
06 Equals (EQ) Flag
07 Less Than (LE) Flag
AR Word Allocations
AR word addresses extend from AR 00 to AR 27; AR bit addresses extend from AR 0000 to AR 2715. Most
AR area words and bits are dedicated to specific uses, such as transmission counters, flags, and control bits,
and words AR 00 through AR 06 and AR 23 through AR 27 cannot be used for any other purpose. Words and
bits from AR 07 to AR 22 are available as work words and work bits if not used for the following assigned pur-
poses.
Word Use
AR 07 Error History Area (CPU11-E only)
AR 07 to 15 SYSMAC LINK Units
AR 16, AR 17 SYSMAC LINK and SYSMAC NET Link Units
AR 18 to AR 21 Calendar/Clock Area (CPU11-E only)
AR 07, AR 22 TERMINAL Mode Key Bits (CPU11-E only)
AR Bit Allocations
Word(s) Bit(s) Function
00 00 to 09 Error Flags for Special I/O Units 0 to 9 (also function as Error Flags for PC Link Units)
10 Error Flag for operating level 1 of SYSMAC LINK or SYSMAC NET Link System
11 Error Flag for operating level 0 of SYSMAC LINK or SYSMAC NET Link System
12 Host Computer to Rack-mounting Host Link Unit Level 1 Error Flag
13 Host Computer to Rack-mounting Host Link Unit Level 0 Error Flag
14/15 Remote I/O Master Unit 1/Unit 0 Error Flags
01 00 to 09 Restart Bits for Special I/O Units 0 to 9 (also function as Restart Bits for PC Link Units)
10 Restart Bit for operating level 1 of SYSMAC LINK or SYSMAC NET Link System
11 Restart Bit for operating level 0 of SYSMAC LINK or SYSMAC NET Link System
12, 13 Not used.
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