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Section 5-1
6-1 Outline of Host Link / NT Link / C200H Direct Operation
This section describes the basics for operating the NT600S through communica-
tions with the PC using the Host link/NT link/C200H direct.
6-1-1 Equipment and Settings Used in This Chapter
The following equipment and settings are used in the examples in this Chapter:
[Equipment] PT : NT600S-ST121-EV3
PC : CQM1
Support tool : NT-series Support Tool Ver. 2.
[Support tool settings]
NT Model : NT600S
Memory capacity : 128 KB
Direct Access : Ver.5
Direct Macn Type: OMRON
6-1-2 Allocatable Bits and Words
The following bits and words are allocated to the PC and used for the NT600S op-
eration. The rangeof respective area varies with the type of PC. Refer to Appendix
L PC Memory Map (page 291).
The allocations must be made without exceeding respective area range.
[OMRON PCs]
CSeriesPCs CVM1/CV Series PCs
S
y
m
b
o
l
A
l
l
o
c
a
t
e
d
Allocated Word
A
l
l
o
c
a
t
e
d
Allocated Word
S
y
m
b
o
l
Area Name
A
l
l
ocate
d
Bit
Numeral
Character
String
Area Name
A
l
l
ocate
d
Bit
Numeral
Character
String
DM Data Memory
✓ ✓ ✓
Data Memory
✓ ✓ ✓
CH
Internal/Special
Relay
✓ ✓ ✓
Internal/Special
Relay
✓ ✓ ✓
TIM Timer Timer
CNT Counter Counter
HR Holding Relay
✓ ✓ ✓
--
AR Auxiliary Relay
✓ ✓ ✓
Auxiliary Relay
✓ ✓
LR Link Relay
✓ ✓ ✓
--
✓
:OK
: 1 word only :NG
One allocation word of the memory table can use continuous areas of up to 2
words in the case of numeral memory table or 20 words in the case of character-
string memory table.
When allocating a memory table to words, the allocation must not exceed the
word area.
Since the special auxiliary relays of the CV series PCs are allocated to thesystem,
they cannot be used for purposes other than the system use. However, reading
from them is possible.