Omron NT21 Reference Manual page 296

Mathematical Function
Symbol C-series PCs
None IR Area
H HR Area
A AR Area
L LR Area
TC Area,
T
Timer PVs
TU ---
TC Area,
C
Counter PVs
CU ---
W ---
TK ---
D DM Area
*2
EM Area ,
E
current bank
E0_ to
---
EC_
280
Using Numeral Memory Table Entries
Any numeral memory table entry can be specified as an operand. When a nu-
meral memory table entry is specified, the number of words used in the calcula-
tion or the number of words stored as the calculation result depends upon
whether words are allocated to the host.
Words not allocated:
The operands/calculation results are treated as 2-word data.
Words allocated:
The operands/calculation results are treated as 1-word data if 1 word is allo-
cated or 2-word data if 2 words are allocated.
Using PC Addresses
Words in the following data areas of the host (PC) can be specified as operands
or calculation results.
Allocation CV-series PCs
OK CIO Area
OK ---
OK Auxiliary Area
OK ---
Timer Area,
No
Timer PVs
--- ---
Counter Area,
No
Counter PVs
--- ---
--- ---
--- ---
OK DM Area
EM Area,
OK
current bank
--- ---
*1: LR 00000 to LR 00199 are converted to CIO 01000 to CIO 01199.
*2: The EM Area is supported only by the C200HX/HG/HE(-Z)E PCs.
Since words in the Auxiliary Area of the CVM1 and CV-series PCs is allocated to
system functions, and it cannot be used for purposes other than system use.
Timer and counter PVs cannot be specified directly. Use numeral memory table
entries when using timer/counter PVs.
The range of each memory area differs according to the PC. Refer to Appendix D
PC Memory Maps on page 435.
When a memory link is used, any PT memory address (0000 to 9999) can be
specified.
When a PC address (PT memory) is used, the number of words used in the cal-
culation and the number of words stored as the calculation result are specified
with the data length. The data length specification is the same for all operands
and results of a formula.
Allocation CS/CJ-series PCs
OK CIO Area
--- HR Area
No AR Area
*1
--- LR Area
TC Area,
No
Timer PVs
TC Area,
---
Timer Completion Flags
TC Area,
No
Counter PVs
TC Area,
---
Counter Completion Flags
--- WR Area
--- Task Flags
OK DM Area
Not with EM Area,
Host Link current bank
EM Area,
---
EM banks 0 to C
Section 2-18
Allocation
OK
Not with
Host Link
OK
Not with
Host Link
No
No
No
No
Not with
Host Link
No
OK
Not with
Host Link
Not with
Host Link