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1-4
Section
Communication Using the Direct Connection Function
12
1-4-2 NT Link
The NT link is a new communication method applied between the NT620S/620C
and a PC.
The PCs that can be connected using the NT link are as follows.
S
When using the built-in host link of the CPU unit
CPM1 (RS-232C adapter required), CQM1, C200HS, C200HX/HG/HE,
CVM1/CV series PCs.
S
When using a communication board
C200HX/HG/HE
When using the NT620S/NT620C in an NT link, two communications modes are
possible: a single NT620S/NT620C can be connected to one PC (1:1 NT link), or
alternatively, up to eight NT620S/NT620C units can be connected to a single PC
port (1:N NT link).
However, the 1:N connection NT link can be used with C200HX/HG/HE only. In
the following sections, the NT link communication mode in general will be indi-
cated by the term “NT link”, a 1:1 connection NT link will be indicated by “NT link
(1:1)”, and a 1:N connection NT link will be indicated by “NT link (1:N)”.
Features of the NT Link
S
High speed communications with specific types of PCs can be executed.
S
Writing in units of bits to the PC memory area is possible. (*)
This enables another bit of a word data to which a touch switch has been allo-
cated to be used for other purpose (e.g., to allocate a lamp).
S
This can be used even when the PC is in the RUN mode.
When using the host link, the operation mode changes to the monitor mode.
S
Provided the PT used is one that supports the NT link (1:N) (i.e., NT30/NT30C/
NT20S/NT600S/NT620S/NT620C), up to eight PTs can be connected to a
single PC port.
S
When using C200HX/HG/HE, by installing an expansion communication
board in the option slot of the CPU unit, it is possible to connect up to three NT
link (1:N) systems (comprising a total of 24 NT620S/NT620C units). For de-
tails on communication boards, refer to the “SYSMAC C200HW-COM01 to
06-E Communication Board OPERATION MANUAL” (W304-E1-
j
).
(*) Except a DM area.
The NT link function is compatible with the host link function with respect to
screen data. The NT620S/620C screen data and the PC programs handled by
the host link direct connection can be used with for the NT link as they are.
Содержание NT620C
Страница 1: ...Cat No V033 E1 5 Programmable Terminals NT620S 620C OPERATION MANUAL...
Страница 2: ...NT620S 620C Programmable Terminals Operation Manual Revised April 2001...
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Страница 326: ...Appendix K Option List 325 Battery 3G2A9 BAT08 This is a lithium battery used for memory backup...
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