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2-14
Section
Recipe
221
Symbol
Allocation
CS1-series PCs
Allocation
CV-series PCs
Allocation
C-series PCs
T
TC Area,
Timer PVs
n
1
Timer Area,
Timer PVs
n
1
TC Area,
Timer PVs
n
1
TU
---
---
---
---
TC Area,
Timer Completion Flags
C
TC Area,
Counter PVs
n
1
Counter Area,
Counter PVs
n
1
TC Area,
Counter PVs
n
1
CU
---
---
---
---
TC Area,
Counter Completion Flags
W
---
---
---
---
WR Area
n
2
TK
---
---
---
---
Task Flags
D
DM Area
f
DM Area
f
DM Area
f
E
EM Area
*2
,
current bank
f
EM Area,
current bank
n
2
EM Area,
current bank
n
2
E0_ to
EC_
---
---
---
---
EM Area,
EM banks 0 to C
n
2
f
: OK
: NG
n
1: One word only
n
2: Host link not available
*1: Words LR 00000 to LR 00199 are converted to CIO 01000 to CIO 01199.
*2: The EM Area is valid for the C200HX/HG/HE(-Z)E PCs only.
The Auxiliary Area of the CVM1 and CV-series PCs is allocated to system func-
tions, and cannot be used for purposes other than system use.
The range of each memory area differs according to the PC. Refer to
Appendix D
PC Memory Maps on page 429.
Storage Type (to Words in the Host)
Specify each recipe data format individually when storing data from the recipe
data memory in the PT to words in the host, or when reading data from words in
the host.
When Storage Type is BCD
Writing from PT to Host
The binary data in the recipe data memory is converted to BCD data and written
to the host. If the number is negative, the most significant digit in the word is writ-
ten as “F.” (Consequently, if the number is negative, the largest possible number
of digits (integer decimal digits) is seven.
Note
If the content of the recipe data memory exceeds the range that can be handled
by the words allocated in the host, “– (minus sign) + least significant digit” is writ-
ten to the host (refer to explanation below).
Reading from Host to PT
The contents of the words on the host are taken to be BCD data, and are read to
recipe data memory. If the most significant digit is “F,” the contents are taken to
be negative.
Note
If the contents of the words on the host are not in correct BCD data format (i.e., if
the most significant digit is A to E, or if any of the other digits are A to F), the data
will not be read, and the PT recipe data memory will retain its previous value.
When Storage Type is Binary
Writing from PT to Host
The binary data in the recipe data memory is written unconverted to the host.
Reading from Host to PT
The contents of the words on the host are taken to be signed binary data and are
read to recipe data memory unconverted.
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Summary of Contents for NT21 Series
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