Time entry from HMI compared against curr_hour and curr_minute

[PFrog]

Hello,


I am going to use an HMI for a 4 digit military rime entry. I want to compare this value against the curr_hour and curr_minute in the control logix processor. My question is how to break up the 4 digit number with the two upper, and two lower values that I can use to directly compare against curr_hour and curr_minute?


I could have two different entries on the HMI to accomplish this, but I liked the idea of just having one.

I am using Rslogix 5000 with structured text.

Thanks!

 

[scott.lawrence]

use a GSV to put the time into tags, then compare as normal

 

[PFrog]

use a GSV to put the time into tags, then compare as normal

I am using a GSV to pull the system time from the control logix processor. I am looking to compare those values against a 4 digit military time entry from an HMI. I am wanting to know the best way to break up the 4 digit time entry with the two upper digits comparing against the current hour (from the GSV) and the two lower digits comparing against the current minute (from the GSV). I am not certain on how to separate the 4 digit number...

 

[scott.lawrence]

you could have it in two tags on the HMI separated by a ":"... a single entry for HH and another for MM

 

[PFrog]

you could have it in two tags on the HMI separated by a ":"... a single entry for HH and another for MM

I could do that, but I was wondering how I could do it with one 4 digit entry.

 

[LadderLogic]

1924 / 100 = 19 (that assumes integer division, not floating-point)
1924 mod 100 = 24

 

[PFrog]

1924 / 100 = 19 (that assumes integer division, not floating-point)
1924 mod 100 = 24

Works great, thanks.

 

[bernie_carlton]

Check that the division works with minutes over 50. If not do the mod first then subtract the extracted minutes from the total before dividing by 100.