MP II digital input node red

Modifications Node-RED
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1

Hello,
is there any way to check if a digital input is open or closed in node red? Would like to change current limit based on an opened or closed external relay.

3

I only know one person who shared how here.

I hadn’t tried out the idea yet.

4

Thank you. But I cannot find any node for digital input in node red.

5

You would have to set it for a door closed or open alarm then read the alarm state probably as an idea.

It needs to be triggering something and then you read the state of the thing triggered.

The payload is the trigger state.

6

Thank you! I‘ll give it a try and come back to you.

7

Sorry but I think you missunderstood. I would like to read a digital input if the external relay is opened or closed. If status changed from closed to open I’ll change maximum charge power.
I have no cerbo gx.

9

Shoet answer for the MP2…

Not directly in node red.

Through modbus is is more likely, maybe look at using node red with a modbus integration.
(No, i don’t know the modbus addresses.) there isn’t a published list.

11

Maybe with ve configure assistant?

12

Yes.
That is the designed and expected way for them to be programmed and used.

13

Okay. I‘ve tested a lot, but cannot find any option to set the charging and discharging limit for opened/closed input. Only way is to shutdown the whole MP.

14

What exactly are you trying to do?
Which relay/input are you wanting to control and what do you want it to do?

15

If an external relay is open, I would like to throttle charge and discharge power.

16

Hello,
do you have any other hints for me?

17

May I can use charge current control assistant? But looks like that this will override ESS mode. I simply would like to slow down charging to a value when Aux Input has no voltage.

18

Seems like the most likely one to use.
Sorry i missed your previous replies

19

Maybe also look at the two signal bms one as well. As that has ATC and ATD.

20

Thank you for your reply. As I understood the current control assistant: The current will be controlled via voltage. I do want to use ESS control and set the MP to inverter only mode when there is no voltage on aux input.