Hi,

How to communicate with Schlumberger Indigo+?
The meter has DB25 serial port.

thanks
-mirza-

 

Hi,

You can connect to Slb Indigo+ DB25 by null-modem cable. The protocol (IEC-1107) the same as in opto-port.

Sla

 

Hi Sla,

Thanks for the reply... I tried what you suggest, but i have no success...

I got these from my meter at power up:

00 00 78 00 00 78 00 0F F8 78 1E 80 00 80 80 78
1E 78 00 FF F8 78 FE 00 80 78 00 F0 78 00 00 78
00 0F F8 78 1E 80 00 80 80 78 1E 78 00 FF F8 78
FE 00 80 78 00 F0 78 00 00 78 00 0F F8 78 1E 80
00 80 80 78 1E 78 00 FF F8 78 FE 00 80 78 00 F0
78 00 00 78 00 0F F8 78 FE 80 78 1E 80 F8 00 80
F8 80 80 78 FE 00 80 78 00 F0 78 00 00 78 00 0F
F8 78 FE 80 78 1E 80 F8 00 80 F8 80 80 78 FE 00
80 78 00 F0 78 00 00 78 00 0F F8 78 FE 80 78 1E
80 F8 00 80 F8 80 80 78 FE 00 80 78 00 F0 78 00
00 F8 00 78 FE 00 F8 00 F8 F8 78 00 0F 00 80 78
FE 00 80 78 00 F0 78 00 00 F8 00 78 FE 00 F8 00
F8 F8 78 00 0F 00 80 78 FE 00 80 78 00 F0 78 00
00 78 00 0F F8 00 F8 00 F8 F8 78 00 0F 00 80 78
FE 00 80 78 00 F0 78 00 00 78 00 0F F8 F8 80 78
1E 00 C0 80 78 FE F8 78 00 FF F8 78 FE 00 80 78
00 F0 78 00 00 78 00 0F F8 F8 80 78 1E 00 C0 80
78 FE F8 78 00 FF F8 78 FE 00 80 78 00 F0 78 00
00 78 00 0F F8 F8 80 78 1E 00 C0 80 78 FE F8 78
00 FF F8 78 FE 00 80 78 00 F0

These stream recorded at 9600 bps.

please give me informations.

Mirza

 

Hi Mirza

At the end could you communicte with that Indigo+ ?!

Greetings
Balint

 

Are you sure this is the correct baud rate?

I see too many 0x80, F8, and F0 for what I'd expect in a protocol - Notice there is not a single 2/3/4/5/6/9/A/B/D digit in the whole thing. I'd suggest your product are talking at a slower baud rate than 9600, which means when you see 0xF0 you may be just seeing a single '1' bit & '0' bit of data sending at say 1200 or 2400 baud? Framing errors should be occuring, but MANY programs ignore these and you won't know.

- LynnL, www.digi.com

 

Hello

I realized at loading data from Indigo+ the communication is with an encryption. What I absolutely understand bacuse the meter use the public telephone network.

Is this encryption offical? Is just the encryption key is secret or both?

Regards
Balint

 

I don't know about the Indigo. Unfortunately, there are 2 broad classes of encryption:

1) "Weak encryption", which often relies upon some trick plus "obscurity" as a form of security. In other words, once you know the "trick", it is easy to decrypt. Such "standards" tend to be used by proprietary systems.

2) "Strong encryption", which is completly opposite. One publishes the exact method to encrypt & decrypt, but only the secret key (or 1 of a key-pair in public-key) allows decrypting in human time scales. The new AES federal US standard is such an example. The method to "break" such a code by brute force is well known, but computer resources today don't exist to do this.

Most proprietary systems common say 10 years ago would use "weak encryption", so had to guard the trick & hoped market obscurity would keep people from trying to break the code.

Today the trend is to strong, public/published algorithms. Our products use SSLv2/TLSv1 (a port of OpenSSL) with 3DES or AES.

If Indigo+ just uses an old trick - you need find the trick. If it is a modern "strong encryption" system there is no trick and you just need the key.

- LynnL, www.digi.com