Siemens hour meter

I am trying to record the run times and on-load times of 3 pumps in TIA Portal as hour meters. I want to monitor these on my HMI. I'm not familiar with the operation of the runtime meter in the library and am finding the documentation quite confusing. I'm open to any suggestions to do this the easiest. Thanks.

why not making it simple with an adding tag that would count a done timer every 1/100 of a hour (36sec)?

I think I found a solution. I created a function block that adds seconds, minutes, hours from a 1 sec clock pulse, I'm only using the hour output. I think it will fit the bill. Thanks. Rich

This is the solution I came up with.

You're always 1 TEMP flag looks like it won't work.

If I read that right, if its ON you set it. What if its not ON? A TEMP does not remember its last state when the block is called.

I usually just add 0.01666667 to a floating point register on a one minute pulse timer whenever the motor is running and display the RTH as a decimal value. No need to bother with seconds or minutes for a typical run time logger.

PeterW, I did catch the temp flag after I scanned the page. It should have been inverted. Bit_Bucket_07, I'll have to look into that, thanks for the suggestion.

Rich

il faut passer au rtm

Use the RTM function - much easier

Can you explain more about this?

janner_10 said:

Use the RTM function - much easier

Click to expand...

I could not understand how to insert an RTM function inside my FB motor control so that I have an individual hourmeter for each motor.

A solution presented by "RClem" that uses the CPU clock seems pretty cool.

Why not use a TONR to store the operating time?

mrsoliveira said:

I could not understand how to insert an RTM function inside my FB motor control so that I have an individual hourmeter for each motor.

A solution presented by "RClem" that uses the CPU clock seems pretty cool.

Why not use a TONR to store the operating time?

Click to expand...

Per the Siemens help file :
Introduction

The CPUs have a specific quantity of runtime meters (refer to the technical specifications of your CPUs).

If your CPU is equipped with 16-bit runtime meters, you can set, start, stop, and read them with the "SET_RTM", "CTRL_RTM" and "READ_RTM" instructions.

If your CPU is equipped with 32-bit runtime meters, you can set, start, stop or read them with the "RTM" instruction.

Note
You can also use the "SET_RTM", "CTRL_RTM" and "READ_RTM" instructions for the 32-bit runtime meters. In this case, however, the runtime meters operate in the same way as 16-bit runtime meters (range of values: 0 to 32767 hours).

See also: Data record of the partial list extract with SZL-ID W#16#0132 index W#16#000B.


Application

You can use a runtime meter for a variety of applications:

For measuring the runtime of the CPU

For measuring the runtime of controlled equipment or connected devices.

Characteristics of the runtime meter

When it is started, the runtime meter begins to count starting at the last recorded value. If you want it to start at a different initial value, you must explicitly specify this value ("SET_RTM" or "RTM" with MODE=4). If the CPU changes to STOP mode, or you stop the runtime meter, the CPU records the current value of the runtime meter. When a warm restart or a cold restart of the CPU is executed, the runtime meter must be restarted ("CTRL_RTM" or "RTM" with MODE=1).

The runtime meters are reset to "0" following an update of the operating system or following a CPU reset to the factory state.

Range of values

CPU with 16-bit runtime meters: 0 to 32 767 hours

CPU with 32-bit runtime meters: 0 to (2E31) -1 hours = 2,147,483,647 hours