devittjl
Member
Hello,
I would like to know if there is and equivalent to the follow AB indirect addressing technique available with S7-300
N19:[N7:91]/15
I use this logic in a shift register (N19). N7:91 is and interger that deterines which step to look at in the shift register. The value of N7:91 will change based on certain criteria, in this case feed speed.
Currently I have to set up three branches with bit for three different feed speeds as shown below.
A "FEEDHISPEED"
A DB1.DBX 194.7
O
A "FEEDMDSPEED"
A DB1.DBX 195.7
O
A "FEEDLOSPEED"
A DB1.DBX 197.7
)
FP "OS3"
S "R1_LOAD_SIGNAL"
I would like to use indirect addressing similar to AB style.
Or can I copy different DBs into the logic.
The reason for this is that the shift register location is enter through a display so the the machine can be adjusted in the field without changing the program.
Thank for the help.
I would like to know if there is and equivalent to the follow AB indirect addressing technique available with S7-300
N19:[N7:91]/15
I use this logic in a shift register (N19). N7:91 is and interger that deterines which step to look at in the shift register. The value of N7:91 will change based on certain criteria, in this case feed speed.
Currently I have to set up three branches with bit for three different feed speeds as shown below.
A "FEEDHISPEED"
A DB1.DBX 194.7
O
A "FEEDMDSPEED"
A DB1.DBX 195.7
O
A "FEEDLOSPEED"
A DB1.DBX 197.7
)
FP "OS3"
S "R1_LOAD_SIGNAL"
I would like to use indirect addressing similar to AB style.
Or can I copy different DBs into the logic.
The reason for this is that the shift register location is enter through a display so the the machine can be adjusted in the field without changing the program.
Thank for the help.