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1-4
Section
Communications with the Host
23
•
When using a C200HX/HG/HE(-Z)E PC and standard 1:N NT Links, up to
three 1:N NT Link systems (i.e., 24 PTs) can be connected by installing a com-
munication board in the option slot of the CPU. For details on the communica-
tion board, refer to the
SYSMAC Communication Board User’s Manual
(W304-E1-
j
).
•
When using a CQM1H PC and standard 1:N NT Links, multiple 1:N NT Link
systems can be connected by installing Serial Communications Boards in the
Inner Board slots. For details on the Serial Communications Board, refer to the
CQM1H Serial Communications Board User’s Manual (W365-E1-
j
).
•
When using CS1G or CS1H PC, multiple 1:N NT Link systems (standard or
high-speed) can be connected by installing a Serial Communications Board in
the Inner Board slot or installing a Serial Communications Unit in the Back-
plane. For details on the communication board/communication unit, refer to
the
CS1-series Serial Communication Board/Unit User’s Manual
(W336-E1-
j
).
•
If the PC being used supports the Programming Console function, the
NT31/NT31C or NT631/NT631C can be used as a Programming Console.
•
If the PC being used supports the Device Monitor function, the NT31/NT31C or
NT631/NT631C can be used to change the PC’s operating mode and read/
change data in the PC’s memory areas.
The NT Link is compatible with the host link. The PT screen data and PC pro-
grams used with the host link direct connection method can be used with the NT
Link method as they are.
1-4-4 Functions of the Allocated Bits and Words
Elements displayed on the PT and the PT status can be allocated to the bits and
words of the PC when using the direct connection function. By changing the con-
tents of the bits and words, the PT can be controlled by the PC. It is also possible
to send data to the PC by pressing touch switches at the PT.
The following PT functions can be controlled from the PC.
•
Screens:
Display of designated screens, confirmation of screen numbers, etc.
•
Memory tables:
Writing to a memory table, copying from a memory table to another memory
table, etc.
•
Lamps:
Display instructions, confirmation of display status, etc.
•
Touch switches:
Display instructions, confirmation of display status, enable/disable opera-
tions, etc.
•
Numeric inputs, character string inputs, thumbwheel switch inputs:
Enable/disable inputs, etc.
•
System control:
Buzzer ON/OFF, display/no display status, screen printing, and other PT
statuses
Data in the PT is sent to a PC when, for example, a touch switch is pressed. The
following 5 types of data are sent to a PC.
•
PT status, screen number of currently displayed screen
•
The status of touch switch inputs
•
Numeric values and character string input with the numeral/character string
setting function using touch switches or a bar code reader.
Controlling the PT from
the PC
Notification from the PT
to the PC
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Summary of Contents for NT21 Series
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