4. PLC interface MCP1
Festo GDCP-CMXR-F-EN 0909a
27
successful
SREG.LOADED is set and shows that at least one program
has been loaded.
Loading a further program with positive confirmation
Condition
SREG.ACK is set and shows that the loading procedure was
successful
SREG.LOADED stays set and shows that at least one program
has been loaded.
Loading first program with negative confirmation
Condition
SREG.NACK is set and shows that the loading procedure was
not successful.
SREG.LOADED stays FALSE
SREG.ERROR shows present error
Loading a further program with negative confirmation
Condition
SREG.NACK is set and shows that the loading procedure was
not successful
SREG.LOADED stays set and shows that at least one program
has been loaded.
SREG.ERROR shows present error.
Signal curves: Loading first program with positive confirmation:
Min. 1 prg. loaded
SREG2.B7 LOADED
1
Requirements:
ACK and NACK = 0
2
Rising edge at “Load
program” loads the new
program number N
”
Condition:
Program is error free and
can be loaded.
3
The LOAD output must
carry 1-signal for as long as
it takes until the ACK input
also reports 1-signal.
4
As soon as ACK = 1 has
been recognised by the
PLC, it may reset LOAD to 0.
The CMXR reacts with
a falling edge at ACK.
5
As soon as ACK = 0 has
Acknowledge
SREG2.B5 NACK
Load/reset Ack
SREG2.B4 ACK
Load the program
CREG2.B7 LOAD
Req. prg number
Output data
Содержание CMXR-C1
Страница 2: ......
Страница 42: ...6 Communication variables 42 Festo GDCP CMXR F EN 0909a...
