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Dear sirs,
For connecting SolarSmart MPPT 75/15 I want to use VE. Direct the RS232 interface cable to Siemens communication module CM 1241, RS232. Siemens module has interface physics RS232C(V24).
Is the communication module MPPT 75 compatible with RS232C(V24)?
Best Regards,
Draga Aleksov
D4Tech
No, the MPPT is not directly compatible with RS232 signalling. It is 5V TTL.
You can convert the signals using a MAX232 or something similar.
Hi; lots of info on this here: https://www.victronenergy.com/live/vedirect_protocol:faq
Hi,
Everything is clear. RS232 to TTL converter. But, I have a question about programming SmartSolar MPPT 75/15.
The question refers to VE. Direct protocol.
I want to use the following functions:
Load output control values (register 0xEDAB):
4 ON Load output on (use with caution, no discharge guard)
7 AES Automatic Energy Selector (*3)
Load output data/settings registers:
0xED9D Load switch high level (*2) 0.01 un16 V
0xED9C Load switch low level (*2) 0.01 un16 V
Lighting controller timer:
0xED90 AES Timer 1 un16 min
Usage Schedule:
1. From the midnight to 4:00 am: AES Timer = 300min, 7 AES Automatic Energy Selector (*3) = Active( Maximal power 18W)
2. From 4:00 am to 7:00 am: 4 ON Load output on (use with caution, no discharge guard) = Active. If I need action (Maximal power 55W) otherwise ( Maximal power 18W)
AES Timer = 300min
3. From 7:00 am to 8:00 am: AES Timer = 120min, 7 AES Automatic Energy Selector (*3) = Active( Maximal power 18W)
3. From 8:00 am to midnight: AES Timer = 1min, 7 AES Automatic Energy Selector (*3) = Active
It is possible?
Please, can you explain to me the next functions:
1. Load output control values (register 0xEDAB)
2. Load output data/settings registers
3. Lighting controller timer
Best regards,
Dragan Aleksov
Hi guys, respect to topic, I have a question. I have a MPPT 75|15 and I would like to read and modify the option highlighted in image below using HEXA Protocol. 
What are the register ID's ? . I was searching in the HEXA Protocol document but I didnt found anything. Thanks in advance.
Best Regards.
