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5-8
Section
Notification of the Operating Status to the PC
241
This bit is set to “1” (ON) when screen printing is executed at a printer con-
nected to the NT620S/620C in accordance with an instruction from a touch
switch (screen print key) or from the PC. On completion of printing the bit is set
back to “0” (OFF). Note that if the NT620S/620C system menu or an error
screen is displayed, the bit will be set to “0” (OFF) even if the printer is printing.
For details, see “NT620S/620C Status Control” (page 234).
5-8-2 Reading the NT620S/620C Operating Statuses
This section explains how to determine the status of the NT620S/620C, and as-
certain its operating status.
S
Restrictions on allocating words
The PT status notify area (PT
→
PC) can be allocated to the PC memory areas
listed in the following table.
Symbol
C Series PCs
Allocated
CVM1/CV Series PCs
Allocated
DM
Data memory
f
Data memory
f
CH
Internal/Special Relay
f
Internal/Special Relay
f
TIM
Timer
Timer
CNT
Counter
Counter
HR
Holding Relay
f
–
AR
Auxiliary Relay
f
Auxiliary Relay
LR
Link Relay
f
–
f
: OK
: NG
Since all the CVM1/CV-series special auxiliary relays are allocated to the sys-
tem, they cannot be used for applications not related to the system.
The range of each memory area differs according to the PC type. See Appen-
dix L “PC Memory Map” (page 327).
Procedure
1. Use the support tool to allocate the PT status notify area (PT
→
PC) to the PC
memory.
2. Write a PC program to read the “PT status” word of the PT status notify area
and check each bit status.
S
Report timing of PT status notify bit
The information in the PC status notify area (PT
→
PC) is written to the PC
when the NT620S/620C status is changed during operation.
Example of Using the PT Status Notify Bit
An operation example in which the NT620S/620C status is checked by operating
the PT status notify bit is explained below.
S
Support tool settings
Perform the following setting with the support tool.
PT status notify area allocated word: CH0110
Summary of Contents for NT620C
Page 1: ...Cat No V033 E1 5 Programmable Terminals NT620S 620C OPERATION MANUAL...
Page 2: ...NT620S 620C Programmable Terminals Operation Manual Revised April 2001...
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