Communications Using The Direct Connection Function; Direct Connection Function - Omron NT30 Operation Manual

Communications Using the Direct Connection Function

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Communications Using the Direct Connection Function

1-4-1 Direct Connection Function

Features
8
The communications method applied between the NT and the PC is either a Host
Link or NT Link.
The NT30/30C can be used to access data for the display or to allocate the bits
and words for storing input data in essentially any area in the PC. The NT30/30C
can directly write and read the allocated bits and words to change the display ele-
ments, control operating status, and notify status.
This function is called the direct connection function. The NT30/30C is designed
specially for use with a direct connection.
The bits and words allocated by the direct connection function are called allo-
cated bits and allocated words.
A direct connection enables reading the data to be displayed on the NT30/30C
from a memory area in the PC and writing it to a memory table in the NT30/30C.
Also, the data input at the NT30/30C can be written to a PC memory area. The
NT30/30C screen status can be switched according to PC memory area data,
and NT30/30C status data can be written to a PC memory area.
NT30/30C
• The bits and words used to access operating status and work instructions and
those for storing input data can be allocated in almost any part of PC I/O me-
mory. Bits and words in the PC are accessed from memory table entries.
• The NT30/30C can directly access PC bit and word data so that it can be con-
nected to a PC without changing the PC program that controls the current pro-
duction line.
• The area to control and notify the NT30/30C status, including display screens,
display/no display status, and buzzers, can be allocated in almost any part of
PC I/O memory.
The direct connection function allows the NT30/30C to directly read and write al-
most all bits and words in the PC and to automatically change the NT30/30C
screen display. This function can reduce the load on the PC to improve the pro-
gram development efficiency of the PC.
Section
PC
DM Area IR/CIO Area
AR Area
Timer/Counter
Area
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