SIMATIC S7 300 313c with Load cell -need help
- Thread starter vikas.vvs
- Start date
manmeetvirdi
Member
Hi
Which analog module?
Generally you can download the manual of the required analog card from siemens web site. In manual there is step by step discription of how to connect the module, its troubleshooting as well as sample program.
Following link may help you:
http://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&lang=en&objid=8859629&caller=view
Manmeet
Which analog module?
Generally you can download the manual of the required analog card from siemens web site. In manual there is step by step discription of how to connect the module, its troubleshooting as well as sample program.
Following link may help you:
http://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&lang=en&objid=8859629&caller=view
Manmeet
bouklas
Member
i'm not 100% sure but you have to do next steps:
when make all think that manmeetvirdi vbmenu_register("postmenu_210979", true); said you have to use fc 105 block which is make scalling.you must call it in one fc that you will make.read help in step 7 and it is gonna help you
i hope that i was helpfull
when make all think that manmeetvirdi vbmenu_register("postmenu_210979", true); said you have to use fc 105 block which is make scalling.you must call it in one fc that you will make.read help in step 7 and it is gonna help you
i hope that i was helpfull
Hello Vikas.vvs;
From the manual "CPU 31xC and 31x, Technical data.pdf":
In the drawing, channel 0 address PEWx +0 corresponds to PIW752 [if Step 7 uses English addresses]; the next channel, PEWx + 2 is PIW754...)
Connect your first loadcell to inputs 2 and 4 of terminal X11 (voltage input of integrated AI channel 0); use address PIW752 in your program to read the 0-27648 numerical value that the A/D converter in the analog input will give you; scale it yourself or use FC105 (SCALE) that is available in the Step 7 library for just this purpose.
Hope this helps,
Daniel Chartier
From the manual "CPU 31xC and 31x, Technical data.pdf":
In the drawing, channel 0 address PEWx +0 corresponds to PIW752 [if Step 7 uses English addresses]; the next channel, PEWx + 2 is PIW754...)
Connect your first loadcell to inputs 2 and 4 of terminal X11 (voltage input of integrated AI channel 0); use address PIW752 in your program to read the 0-27648 numerical value that the A/D converter in the analog input will give you; scale it yourself or use FC105 (SCALE) that is available in the Step 7 library for just this purpose.
Hope this helps,
Daniel Chartier
Hello again, Vikas.vvs;
As per your PM request, here is an illustration of the program required to read and scale an analog value on your S7-313C:
Hope this helps,
Daniel Chartier
Edit: I seem to have inverted the Hi_Lim and Lo-Lim
parameters in my example. Forgive my haste. D.C.
As per your PM request, here is an illustration of the program required to read and scale an analog value on your S7-313C:
Hope this helps,
Daniel Chartier
Edit: I seem to have inverted the Hi_Lim and Lo-Lim
parameters in my example. Forgive my haste. D.C.
Last edited:
Tom Jenkins
Lifetime Supporting Member
And after you have it wired and scaled, here ia an exxample of an alarm.
Dear Friend s
now i am able to connect analog input ( dc voltage ) and resistance
to the siemens simatic PLC CPU 313C
i thank all of you for helping me in this task
really this site helps lots of people like me who are new to PLC and automation field
once again THANKS
FOR ALL
Vikas
now i am able to connect analog input ( dc voltage ) and resistance
to the siemens simatic PLC CPU 313C
i thank all of you for helping me in this task
really this site helps lots of people like me who are new to PLC and automation field
once again THANKS
FOR ALL
Vikas
nepalesemanoj
Member
Plc s7-300 cpu 313c
PLC S7-300 CPU 313C
Conditions:
Total 5 inputs:
1) Liquid Temperature
2) Room Temperature
3) Top of the Bioreactor(Warm Temperature)
4) Bottom of the Bioreactor(Cold Temperature)
5) The Given Temperature from the Keyboard
Note: First 4 temeperatures are connected to the inputs of PLC.
Total 5 Outputs:
1) IN A
2) IN B
3) ENABLE A
4) ENABLE B
5) Fix Temperature
Note: 1)When the top of the Bioreactor crosses the limit of temperature i.e. 64 degree celcius, motor must turn on off or start rotating in the opposite direction. Remember, Bioreactor is connected to motor.
2) When the bottom of bioreactor is less than 10 degree celcius, motor must turn on or start rotating in the right direction.
Note: Motor is connected to the output of PLC.
Dear friends,
Please, develop the PLC program to control the various temperatures in the above conditions.
PLC S7-300 CPU 313C
Conditions:
Total 5 inputs:
1) Liquid Temperature
2) Room Temperature
3) Top of the Bioreactor(Warm Temperature)
4) Bottom of the Bioreactor(Cold Temperature)
5) The Given Temperature from the Keyboard
Note: First 4 temeperatures are connected to the inputs of PLC.
Total 5 Outputs:
1) IN A
2) IN B
3) ENABLE A
4) ENABLE B
5) Fix Temperature
Note: 1)When the top of the Bioreactor crosses the limit of temperature i.e. 64 degree celcius, motor must turn on off or start rotating in the opposite direction. Remember, Bioreactor is connected to motor.
2) When the bottom of bioreactor is less than 10 degree celcius, motor must turn on or start rotating in the right direction.
Note: Motor is connected to the output of PLC.
Dear friends,
Please, develop the PLC program to control the various temperatures in the above conditions.
Ahhmmmmmm... how soon do you need this?
Some of us do have to work for a living!
bouklas
Member
The program logic.
Unfortunately I don't have these days too much time. So i will write you just the logic behind. If this can help you, let me know.
Cheers
Unfortunately I don't have these days too much time. So i will write you just the logic behind. If this can help you, let me know.
Cheers
nepalesemanoj
Member
PLC S7-300, CPU313C
There are four analog and other four digital inputs to PLC. Analog inputs are various temperatures. Now, we need to get the signals for output temperatures and PWM. Current ranges from 4mA to 20 mA. As you know all the parameters of PLC S7-300 CPU313C , now let us start doing the program considering the above conditions.
There are four analog and other four digital inputs to PLC. Analog inputs are various temperatures. Now, we need to get the signals for output temperatures and PWM. Current ranges from 4mA to 20 mA. As you know all the parameters of PLC S7-300 CPU313C , now let us start doing the program considering the above conditions.
Hi every one,
is there anyone who has an example about scaling, i mean with pictures.
i have to automate the next situation:
i have three materialtank and one reactor, the capacity of the reactor is 700kg, so the first material come from materialtank 1 and with scaling i could measurement the value,and than when mateial 2 comes, must be added with material 1.
please if someone got an idea, it'll be great
edward
is there anyone who has an example about scaling, i mean with pictures.
i have to automate the next situation:
i have three materialtank and one reactor, the capacity of the reactor is 700kg, so the first material come from materialtank 1 and with scaling i could measurement the value,and than when mateial 2 comes, must be added with material 1.
please if someone got an idea, it'll be great
edward
You need to state more information.
How does it know how much of material 1 to add?
Are you trying to then minus the amount of Material 1 from 700Kg to determine how much of Material 2 or is Material 2 proportional to Material 1?
What are you using to determine how much of Material 1 and 2 has been added? Are you saying you are going to try and do this measurement graphically?
How does it know how much of material 1 to add?
Are you trying to then minus the amount of Material 1 from 700Kg to determine how much of Material 2 or is Material 2 proportional to Material 1?
What are you using to determine how much of Material 1 and 2 has been added? Are you saying you are going to try and do this measurement graphically?
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