Omron C200H Operation Manual page 320

Programming Instructions
Name
Mnemonic
SUBROUTINE START
SBN(92)
RETURN
RET(93)
WATCHDOG TIMER
REFRESH
(@)WDT(94)
I/O REFRESH
(@)IORF(97)
Data Areas
These footnote tables show the actual ranges of all data areas. Bit numbers are provided (except for DM and TC areas); remove the rightmost two digits for word numbers.
IR SR
00000 to 23515 23600 to 25507 HR 0000 to 9915
312
Symbol
Marks the start of subroutine N.
SBN(92)
N
Marks the end of a subroutine and returns
control to the main program.
RET(93)
Sets the maximum and minimum limits for
the watchdog timer (normally 0 to 130 ms).
New limits:
WDT(94) T
Maximum time = 130 + (100 x T)
Minimum time = 130 + (100 x (T–1))
Refreshes all I/O words between the start
(St) and end (E) words. Only I/O words
may be designated. Normally these words
IORF(97)
are refreshed only once per cycle, but re-
St
freshing words before use in an instruction
E
can increase execution speed. St must be
less than or equal to E.
HR TR AR
TR 0 to 7 AR 0000 to 2715
Function
LR TC
LR 0000 to 6315 TC 000 to 511 Read/Wr: DM 0000 to DM 0999
Rd only: DM 1000 to DM 1999
Appendix B
Operand Data Areas
N:
00 to 99
None
T:
0 to 63
St/E:
IR
DM #
0000 to 9999
or 0000 to FFFF