Omron NT620C, Руководство по эксплуатации

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5-7 Section NT620S/620C Status Control
238
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 Appendix
L “PC Memory Map” (page 327).
Procedure 1. Use the support tool to allocate the PT status control area (PC
→
PT) to the
PC memory.
2. Create a PC program to write control data to the “PT status control bits” of the
PT status control area.
S
Control timing of PT status control bits
The PT status control area (PC
→
PT) is not read when the NT620S/620C
starts up. It is only read, and control is only executed, when the contents of the
PT status control area are changed after the NT620S/620C has been started
up.
Since control of the NT620S/620C statuses is executed after the bits corre-
sponding to the PT status control bits have changed, to execute control again
the corresponding bits must be specified again.
Application This example is of the NT620S/620C being used as a warning lamp by using PT
status control bits.
S
Support tool settings
Make the following setting using the support tool.
Allocated word for the PT status control area: CH0100
S
PC program
Create the following PC ladder program.
@MOV(21)
#A000
103
09002
09003
09002
@MOV(21)
#9000
103
@ANDW(34)
103
#CFFF
(1)
Display the screen, sound continuous buzzer
Word for PT status control
(2)
Display the screen, sound intermittent buzzer
Word for PT status control
(3)
Word for PT status control
Only continuous and short intermittent
buzzers are “0”
Word for PT status control
09003
09003
103