Jethro Baidoo
Member
good morning
Analog value processing
- Thread starter Jethro Baidoo
- Start date
Jethro Baidoo
Member
OP
please i need the STL code for analog input and output processing
Mickey
Lifetime Supporting Member
It may help if you tell the forum what PLC you are using, analog modules and define "processing".
Mickey
Lifetime Supporting Member
How do you know?
Jethro Baidoo
Member
OP
Siemens S7 300
AI4/AO2x8/8Bit
I want to monitor the fill level of a tank
Tank capacity is 1000litres
I dont want to use the standard library blocks
AI4/AO2x8/8Bit
I want to monitor the fill level of a tank
Tank capacity is 1000litres
I dont want to use the standard library blocks
Scaling
Hi,
Try this:
L PIW256 // (check adress in your hardware config
ITD
DTR
L 27648.0
/R
L 1000.0
*R
T DB10.DBD0 // Wherever your Fill Level has to be stored.
For the Output, Speed of a Pump for example ?
L DB20.DBD0 // Setpoint in REAL datatype 0-100%
L 100.0
/R
L 27648.0
*R
RND
T PQW256 // (check adress in your hardware config
27648 stands for the range of an analogue input or output in Siemens.
Kind regards,
G
Hi,
Try this:
L PIW256 // (check adress in your hardware config
ITD
DTR
L 27648.0
/R
L 1000.0
*R
T DB10.DBD0 // Wherever your Fill Level has to be stored.
For the Output, Speed of a Pump for example ?
L DB20.DBD0 // Setpoint in REAL datatype 0-100%
L 100.0
/R
L 27648.0
*R
RND
T PQW256 // (check adress in your hardware config
27648 stands for the range of an analogue input or output in Siemens.
Kind regards,
G
Jethro Baidoo
Member
OP
Thank you guys for your support.
i appreciate your help.
let's keep up with the good work
i appreciate your help.
let's keep up with the good work
I did not, but with the lack of info, it was not a wrong answer
.Back on topic.
Your analog input is likely to be 0..27648, but can be different depending on your hardware. An resistance input for example (RTD, PT100, T-couple) might be read as resistance with a scale of 10 or 100. Negative values are also possible.
How are you going to control your output?
Is there a reason you do not want to use standard blocks?
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