I'm Still trying to setup a basic level control using this FB41 Block. bawling I have had help from some of you guys before so I will field these questions to see if anyone can answer them. I have been talking to siemens and it seems to me that they don't want to give me all the Info I need to finish this little project of mine. They keep refering me to documents that don't answer my questions!
Am I the only one having this problem?
Here is a copy of the last email I sent to them.
#1. If I put FB41 block into OB35 (set at 100ms) do I have to do anything with Com_RST?
#2. On SP_INT It says (-100.0...100) if I wanted a value of 50%, do I enter 0 (which is half way between -100 and 100) or do I just enter 50?
#3.On Gain in DB1 (of FB41). Is there a way that I can have this value change (call integer value from another address) so that I don't have to go into DB1 and manually type the value in? Note: I wish to be able to change gain value from HMI. What address would I use to do this?
#4. According to the Info I have, If I took the word address (PIW 448) and entered it in FB41 on the block @ PV_PER, it should scale my analog input for me. Yes? How do you setup what scaling takes place?
Or do it matter? What would I have to do with CRP_IN & CRP_OUT?
#5. Can I use a word address PQW 464 at the FB41 block LMN_PER output to give me a 4-20 mA signal on my analog output card that I can use with my I to P to control a valve? What will I have to do to manipulate the output of LMN_PER to give me a 4-20 mA signal at my analog output card?
I want to thank all you guys for the help.
:site:
Am I the only one having this problem?
Here is a copy of the last email I sent to them.
#1. If I put FB41 block into OB35 (set at 100ms) do I have to do anything with Com_RST?
#2. On SP_INT It says (-100.0...100) if I wanted a value of 50%, do I enter 0 (which is half way between -100 and 100) or do I just enter 50?
#3.On Gain in DB1 (of FB41). Is there a way that I can have this value change (call integer value from another address) so that I don't have to go into DB1 and manually type the value in? Note: I wish to be able to change gain value from HMI. What address would I use to do this?
#4. According to the Info I have, If I took the word address (PIW 448) and entered it in FB41 on the block @ PV_PER, it should scale my analog input for me. Yes? How do you setup what scaling takes place?
Or do it matter? What would I have to do with CRP_IN & CRP_OUT?
#5. Can I use a word address PQW 464 at the FB41 block LMN_PER output to give me a 4-20 mA signal on my analog output card that I can use with my I to P to control a valve? What will I have to do to manipulate the output of LMN_PER to give me a 4-20 mA signal at my analog output card?
I want to thank all you guys for the help.
:site: