# Node-red-contrib-dsm question

**URL:** <https://discourse.nodered.org/t/node-red-contrib-dsm-question/6585>\
**Category:** General\
**Created:** [9 January 2019 04:32 UTC](https://discourse.nodered.org/t/node-red-contrib-dsm-question/6585 "2019-01-09T04:32:49Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![jupiter8](https://avatars.discourse-cdn.com/v4/letter/j/34f0e0/32.png) [@jupiter8](https://discourse.nodered.org/u/jupiter8)\
**Post date:** [9 January 2019 04:32 UTC](https://discourse.nodered.org/t/node-red-contrib-dsm-question/6585/1 "2019-01-09T04:32:49Z")

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This is an awsome node, i'm really enjoying the contex storage example to monitor some real world machine running time . But pushing things a little bit further i'd like to modify the rising edge counter to be persisent as well. I have a payload from a counter that i would like to persist across restarts. any ideas anyone?

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**Author:** ![ukmoose](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ukmoose/32/13_2.png) [@ukmoose](https://discourse.nodered.org/u/ukmoose)\
**Post date:** [9 January 2019 07:33 UTC](https://discourse.nodered.org/t/node-red-contrib-dsm-question/6585/2 "2019-01-09T07:33:17Z")

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you want to modify the rising edge counter within the node? If that’s the case the best bet as it is a contrib node is to open a discussion with the node author.  
The best place for that is usually the nodes github page ( a link is generally avaialable from the nodes page on [flows.nodered.org](http://flows.nodered.org))

If you mean outside of node-red read the blog entry on the latest release about persistent storage.

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**Author:** ![cflurin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cflurin/32/29_2.png) [@cflurin](https://discourse.nodered.org/u/cflurin)\
**Post date:** [9 January 2019 10:11 UTC](https://discourse.nodered.org/t/node-red-contrib-dsm-question/6585/3 "2019-01-09T10:11:45Z")

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@jupiter8: There are two ways to do it:

1. Store the counter in a context variable, see [persist across restarts](https://github.com/cflurin/node-red-contrib-dsm/wiki/Rising-edge-counter#expanded-configuration-with-contextstorage-counter-persists-across-restarts)
2. Set the dsm configuration with an inject node:

![counter](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/1/1cb2b3d9e4ab2f4f98a48693b9ed517b6044a146.png)

Note: The inject node is only used once to define the configuration (or if you need to modify it).

Flow:

```auto
[{"id":"f18070e.d1f739","type":"dsm","z":"6ff0723.8c6b78c","name":"rising-edge counter","sm_config":"","x":380,"y":1200,"wires":[["581f1472.02c33c"]]},{"id":"6faa5214.722d9c","type":"inject","z":"6ff0723.8c6b78c","name":"","topic":"","payload":"1","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":170,"y":1240,"wires":[["f18070e.d1f739"]]},{"id":"581f1472.02c33c","type":"debug","z":"6ff0723.8c6b78c","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","x":570,"y":1200,"wires":[]},{"id":"cf54e77.7332618","type":"inject","z":"6ff0723.8c6b78c","name":"","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":170,"y":1200,"wires":[["f18070e.d1f739"]]},{"id":"ca10673e.2a1e28","type":"inject","z":"6ff0723.8c6b78c","name":"reset counter","topic":"reset","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":150,"y":1160,"wires":[["f18070e.d1f739"]]},{"id":"98a31f23.6ae47","type":"inject","z":"6ff0723.8c6b78c","name":"set","topic":"set","payload":"{ \"data\": { \"counter\": 0 }, \t\"methods\": { \t \"reset\": \"sm.data.counter = 0;\", \t \"onTransition\": [\t \"if (msg.payload === 1) {\", \" sm.data.counter++;\", \" msg.payload = sm.data.counter;\", \" output = true;\", \"}\"], \t \"status\": { \t \"fill\": \"blue\", \"shape\": \"dot\", \"text\": { \"get\": \"sm.data.counter;\" } } \t} }","payloadType":"json","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":170,"y":1120,"wires":[["f18070e.d1f739"]]}]

```

@ukmoose:

This isn't an issue but a question, so here is the right place to ask. You may also open an issue on github if you like, no problems for me.

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<div class="post-metadata">

**Author:** ![jupiter8](https://avatars.discourse-cdn.com/v4/letter/j/34f0e0/32.png) [@jupiter8](https://discourse.nodered.org/u/jupiter8)\
**Post date:** [9 January 2019 21:35 UTC](https://discourse.nodered.org/t/node-red-contrib-dsm-question/6585/4 "2019-01-09T21:35:21Z")

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@cflurin:

Works a treat, thank you very much.

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**Author:** ![jupiter8](https://avatars.discourse-cdn.com/v4/letter/j/34f0e0/32.png) [@jupiter8](https://discourse.nodered.org/u/jupiter8)\
**Post date:** [11 January 2019 03:24 UTC](https://discourse.nodered.org/t/node-red-contrib-dsm-question/6585/5 "2019-01-11T03:24:45Z")

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@cflurin

And by the way, how can i format the ouput of the "operating time" flow in hours min sec like a normal hour meter on a machine? I've searched for a javascript function example or node but all are giving Time, it has to be a simple sec to HH:mm:ss function...

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [11 January 2019 07:48 UTC](https://discourse.nodered.org/t/node-red-contrib-dsm-question/6585/6 "2019-01-11T07:48:06Z")

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> [@jupiter8](#):
>
> And by the way, how can i format the ouput of the "operating time" flow in hours min sec

Have a look at node-red-contrib-moment

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<div class="post-metadata">

**Author:** ![cflurin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cflurin/32/29_2.png) [@cflurin](https://discourse.nodered.org/u/cflurin)\
**Post date:** [11 January 2019 10:41 UTC](https://discourse.nodered.org/t/node-red-contrib-dsm-question/6585/7 "2019-01-11T10:41:19Z")

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@jupiter8  
You can use the node @colin has proposed or use a simple function in the dsm node.

Just copy/past this configuration:

```auto
{
    "currentState": "stopped",
    "states": {
        "stopped": {
            "on": "started"
        },
        "started": {
            "inc": "counting",
            "off": "stopped"
        },
        "counting": {
            "inc": "counting",
            "off": "stopped"
        }
    },
    "data": {
        "prev_time": null,
        "time": 0,
        "seconds": 0,
        "interval": 5
    },
    "methods": {
        "init": [
            "sm.calc_time = function () {",
            " var now = Date.now();",
            " sm.data.time += now - sm.data.prev_time;",
            " sm.data.prev_time = now;",
            " sm.data.seconds = Math.round(sm.data.time / 1000);",
            "};",
            "sm.sec2hhmmss = function(t) {",
            " var min = t/60;",
            " var t_h = pad(parseInt(min / 60));",
            " var t_m = pad(parseInt(min % 60));",
            " var t_s = pad(Math.round(t % 60));",
            " return t_h+':'+t_m+':'+t_s;",
            "};"         
        ],
        "on": [
            "if (sm.currentState === 'started') {",
            " sm.data.prev_time = Date.now();",
            " resume('inc', msg);",
            "}",
            "output = false;"
        ],
        "inc": [
            "timeout.interval = setTimeout(function() {",
            " sm.calc_time();",
            " msg.data = sm.data;",
            " /* msg.payload = sm.sec2hhmmss(sm.data.seconds);",
            " node.send(msg); */",
            " resume('inc', msg);",
            "}, sm.data.interval*1000);",
            "output = false;"
        ],
        "off": [
            "clearTimeout(timeout.interval);",
            "sm.calc_time();",
            "msg.payload = sm.sec2hhmmss(sm.data.seconds);"
        ],
        "reset": [
            "sm.data.time = 0;",
            "sm.data.seconds = 0;"
        ],
        "status": {
            "fill": {
                "get": "sm.currentState === 'counting' ? 'green' : 'grey';"
            },
            "shape": "dot",
            "text": {
                "get": "'time '+ sm.sec2hhmmss(sm.data.seconds);"
            }
        }
    }
}

```

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<div class="post-metadata">

**Author:** ![jupiter8](https://avatars.discourse-cdn.com/v4/letter/j/34f0e0/32.png) [@jupiter8](https://discourse.nodered.org/u/jupiter8)\
**Post date:** [14 January 2019 16:51 UTC](https://discourse.nodered.org/t/node-red-contrib-dsm-question/6585/8 "2019-01-14T16:51:06Z")

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Exellent! Thanks.