I need Help ML 1100

pcanis · Sep 23, 2010

I have ML 1100, via the RS 232 receives data from a temperature controller, the variable of the current temperature in the string is format HEX, as I can pass this variable to DEC, example the String value is:3C, the value in DEC is 60.
How is possible convert string HEX to DEC?

Clay B. · Sep 23, 2010

You need to use a ACI function to convert a string to an integer. Go to your help menu in RS Logix 500 and look up the instruction ACI and it will tell you how it is used.

Basically what you are doing is pulling the ASCII value and converting it into an Integer. It is based on ASCII not the actual HEX value.

pcanis · Sep 23, 2010

Yes, ACI is only for ASCII to interger, but my problen is the data is in HEX, no is ASCII

sthompson · Sep 23, 2010

pcanis said:
Yes, ACI is only for ASCII to interger, but my problen is the data is in HEX, no is ASCII

I suspect if you read the manual it is ASCII Encoded Hex.

Stu.....

bernie_carlton · Sep 23, 2010

Here's a program to illustrate extraction of value from ASCII encoded hex characters. This may take a bit of experimenting but this is the core routine.

After posting the program I thought - I can't test this.
If the original MOV of DATA[0] moves just the first character and not the first two let me know. It becomes at once a little easier and a little more complicated.

Clay B. · Sep 24, 2010

pcanis said:
Yes, ACI is only for ASCII to interger, but my problen is the data is in HEX, no is ASCII

This would be a first for me.

Can you post the make and model of the Tempature Controller.

pcanis · Sep 24, 2010

Thanks for you help.
The temperature controller is Carel IR33, is only ASCII port.

I test is ok.

I need Help ML 1100

pcanis

Member

Clay B.

Lifetime Supporting Member

pcanis

Member

sthompson

Lifetime Supporting Member + Moderator

bernie_carlton

Lifetime Supporting Member + Moderator

Clay B.

Lifetime Supporting Member

pcanis

Member

Similar Topics