DB block program
- Thread starter Sautokill
- Start date
Yea that might help, S7 1200 PLC and Simatic touch KTB 1000
I am trying to get a alarm page , what is the best way, Been watching U tube showing array setups and FB, which is the best?
Also I want to add text to graphics on the screen but says that it does not support multilingual text? is this something that needs to be setup? using step 7 Professional V13 software
I am trying to get a alarm page , what is the best way, Been watching U tube showing array setups and FB, which is the best?
Also I want to add text to graphics on the screen but says that it does not support multilingual text? is this something that needs to be setup? using step 7 Professional V13 software
To save on tag count, the Siemens HMIs expect the alarms to use different bits of a word. What may be tripping you up is that Words are not also arrays, like DINTs are in AB. you need to access them differently. Array syntax would be arraytag[index]. What you need is "slice" syntax, to access a bit in a word: alarm tag.x0 (or X11, x2, etc, for each bit.
The "multilingual" message might be related to Windows. I think you need some optional OS service installed.
The "multilingual" message might be related to Windows. I think you need some optional OS service installed.
If you're setting discrete alarm you need to know how to read exact bit from word variable. I have done it this way:
If you really need to read it from DB u should use DBxx.DBXx.x i.e. DB1.DBX0.0 which means first zero is offset of variable you are reading and second is bit of same variable.
If you really need to read it from DB u should use DBxx.DBXx.x i.e. DB1.DBX0.0 which means first zero is offset of variable you are reading and second is bit of same variable.
Last edited:
Diameter157
Member
This is how I did it. Be aware that the numbering is a bit weird in a Siemens. For example I took MW5.
But the first bit is M6.0 till M6.7 then we continue from M5.0 until M5.7
You can name MW5 and also give new names to each bit as well. Then set the bits high in your code when you want the alarm to happen.
Sorry not everything is in English.
But the first bit is M6.0 till M6.7 then we continue from M5.0 until M5.7
You can name MW5 and also give new names to each bit as well. Then set the bits high in your code when you want the alarm to happen.
Sorry not everything is in English.
I think you have all the information here that you need, just a couple of tips.
I would not use uneven numbers, when declaring a tag. So use MW4 and/or MW6, not MW5.
I would also use a DB instead of memory tags, and it will be easiest if you set this DB up without(!) optimized access.
For example. You have DB1 with all your alarms, non optimized access.
Add a tag (WORD) to your HMI tags, absolute.
Then add your alarms.
See pics.
I would not use uneven numbers, when declaring a tag. So use MW4 and/or MW6, not MW5.
I would also use a DB instead of memory tags, and it will be easiest if you set this DB up without(!) optimized access.
For example. You have DB1 with all your alarms, non optimized access.
Add a tag (WORD) to your HMI tags, absolute.
Then add your alarms.
See pics.
This is true for using absolute addressing. If you use slice based addressing, as mentioned in my post above, then it is in the expected least significant bit to most significant bit order. More importantly, it is the same order as used in the HMIS, so you don't have to worry about it.
In a 1200 you should never use absolute addressing unless you really need to.
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