Modbus RTU communication problems

Modbus RTU communication problems:
Hello: want to make MODBUS communication friends to help, in this first thank you!
Making making I used DCS IPC communication VB program and Honeywell, AI communication is normal, single is part of DO has been not, do please help analyze where the problem is.
Making DCS digital DO, usually addressing function code 01, send a command in 05, built 7 points:
DCS send usually addressed command making making 03 01 00 00 00 07 7C 2A
Return lower machine code making making making making making 03 01 01 00 50 30
DCS send usually addressed command making making 03 01 00 00 00 07 7C 2A
Return lower machine code making making making making making 03 01 01 00 50 30

DCS sends the 1 command making making making making 03 05 00 00 FF 00 8D D8 making device 1 is thought to command
Return lower machine code making making making making making 03 05 00 00 FF 00 8D D8
DCS 1 command making making making making making making 03 01 00 00 00 01 FC 28
Return lower machine code making making making making making 03 01 01 01 91 F0 making making making making machine of the return code is correct
DCS send usually addressed command making making 03 01 00 00 00 07 7C 2A
Return lower machine code making making making making making 03 01 01 00 50 30
DCS sends command making making making making making making 03 05 00 00 00 00 CC 28 making DCS automatic command, why so
Return lower machine code making making making making making 03 05 00 00 00 00 CC 28
DCS sends command making making making making making making 03 01 00 00 00 01 FC 28
Return lower machine code making making making making making 03 01 01 01 91 F0 making making making making crew return code is correct
DCS send usually addressed command making making 03 01 00 00 00 07 7C 2A
Return lower machine code making making making making making 03 01 01 00 50 30
DCS sends command making making making making making making 03 05 00 01 FF 00 DC 18
Return lower machine code making making making making making 03 05 00 01 FF 00 DC 18
DCS sends command making making making making making making 03 01 00 01 00 01 AD E8
Return lower machine code making making making making making 03 01 01 02 D1 F1 making making making making making crew return code is correct

DCS send usually addressed command making making 03 01 00 00 00 07 7C 2A
Return lower machine code making making making making making 03 01 01 00 50 30
DCS send usually addressed command making making 03 01 00 00 00 07 7C 2A
Return lower machine code making making making making making 03 01 01 00 50 30

DCS sends command making making making making making making 03 05 00 02 FF 00 2C 18
Return lower machine code making making making making making 03 05 00 02 FF 00 2C 18
DCS sends command making making making making making making 03 01 00 02 00 01 5D E8
Return lower machine code making making making making making 03 01 01 04 51 F3 making making making crew return code is correct
DCS send usually addressed command making making 03 01 00 00 00 07 7C 2A
Return lower machine code making making making making making 03 01 01 00 50 30
DCS sends command making making making making making making 03 01 00 02 00 01 5D E8 making why again command
Return lower machine code making making making making making 03 01 01 00 50 30
DCS send usually addressed command making making 03 01 00 00 00 07 7C 2A
Return lower machine code making making making making making 03 01 01 00 50 30
DCS sends command making making making making making making 03 05 00 03 FF 00 7D D8
Return lower machine code making making making making making 03 05 00 03 FF 00 7D D8
DCS sends command making making making making making making 03 01 00 03 00 01 0C 28
Return lower machine code making making making making making 03 01 01 08 51 F6
DCS send usually addressed command making making 03 01 00 00 00 07 7C 2A
Return lower machine code making making making making making 03 01 01 00 50 30
DCS sends command making making making making making making 03 01 00 01 00 01 AD E8 making why this code
Return lower machine code making making making making making 03 01 01 00 50 30
DCS send usually addressed command making making 03 01 00 00 00 07 7C 2A
Return lower machine code making making making making making 03 01 01 00 50 30
DCS send usually addressed command making making 03 01 00 00 00 07 7C 2A
Return lower machine code making making making making making 03 01 01 00 50 30

The DCS command making making making making making making making 03 01 00 03 00 01 0C 28 making why again command
Return lower machine code making making making making making 03 01 01 00 50 30
DCS send usually addressed command making making 03 01 00 00 00 07 7C 2A
Return lower machine code making making making making making 03 01 01 00 50 30
DCS sends command making making making making making making 03 05 00 04 FF 00 CC 19
Return lower machine code making making making making making 03 05 00 04 FF 00 CC 19
DCS sends command making making making making making making 03 01 00 04 00 01 BD E9
Return lower machine code making making making making making 03 01 01 10 51 FC making making making crew return code is correct
DCS send usually addressed command making making 03 01 00 00 00 07 7C 2A
Return lower machine code making making making making making 03 01 01 00 50 30
DCS send usually addressed command making making 03 01 00 00 00 07 7C 2A
Return lower machine code making making making making making 03 01 01 00 50 30
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30 
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30 
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30 
                       03 01 00 04 00 01 BD E9       03 01 01 00 50 30 
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30 
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30 
                         03 05 00 05 FF 00 9D D9       03 05 00 05 FF 00 9D D9 
                         03 01 00 05 00 01 EC 29       03 01 01 20 51 E8 
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30 
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30 
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30  
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30  
                         03 01 00 05 00 01 EC 29       03 01 01 00 50 30 
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30 
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30 
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30 
                         03 05 00 06 FF 00 6D D9       03 05 00 06 FF 00 6D D9 
                         03 01 00 06 00 01 1C 29       03 01 01 00 50 30 
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30 
                         03 05 00 06 00 00 2C 29       03 05 00 06 00 00 2C 29 
                         03 01 00 06 00 01 1C 29       03 01 01 00 50 30 
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30 
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30 
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30 
                       03 01 00 00 00 07 7C 2A       03 01 01 00 50 30 
                         03 01 00 06 00 01 1C 29       03 01 01 00 50 30 
The 11 point of the communication, the situation worse

03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 05 00 07 FF 00 3C 19     03 05 00 07 FF 00 3C 19 
03 01 00 07 00 01 4D E9     03 01 02 80 00 A1 FC 
03 01 00 07 00 01 4D E9     03 01 02 80 00 A1 FC 
03 01 00 07 00 01 4D E9 making making 03 01 02 80 00 A1 FC making sent 4 yards, almost does not connect
03 01 00 01 00 01 AD E8     03 01 02 80 00 A1 FC 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 05 00 08 FF 00 0C 1A     03 05 00 08 FF 00 0C 1A 
03 01 00 08 00 01 7D EA     03 01 02 00 01 01 FC 
03 01 00 08 00 01 7D EA     03 01 02 00 01 01 FC 
03 01 00 08 00 01 7D EA     03 01 02 00 01 01 FC 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 05 00 09 FF 00 5D DA     03 05 00 09 FF 00 5D DA 
03 01 00 09 00 01 2C 2A     03 01 02 00 02 41 FD 
03 01 00 09 00 01 2C 2A     03 01 02 00 02 41 FD 
03 01 00 09 00 01 2C 2A     03 01 02 00 02 41 FD 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 05 00 0A FF 00 AD DA     03 05 00 0A FF 00 AD DA 
03 01 00 0A 00 01 DC 2A     03 01 02 00 02 41 FD 
03 01 00 0A 00 01 DC 2A     03 01 02 00 02 41 FD 
03 01 00 0A 00 01 DC 2A     03 01 00 00 00 0B 7C 2F 
03 01 00 00 00 0B 7C 2F     03 01 00 00 00 0B 7C 2F 
03 01 00 00 00 0B 7C 2F     03 01 00 00 00 0B 7C 2F 
03 01 00 00 00 0B 7C 2F     03 01 00 00 00 0B 7C 2F 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
03 01 00 00 00 0B 7C 2F     03 01 02 00 00 C0 3C 
Thank you very much for the master pointing!!
      

Started by Laurent at December 25, 2016 - 12:08 PM

The master ordered in addition to the 030500000000 CC 28 other still correct, from the station to the returned data on some problems.
030100020001 5D E8 0301010451 F3 (query only a point, but the data is not in the low)
030100070001 4D E9 0301028000 A1 FC (query only a point, but the data is not low, but also the return of two bytes)
030500000000 CC 28030500000000 CC 28 (a bit like the air operation, actually does not specify the number of register)

Posted by Josie at January 02, 2017 - 1:22 PM

Look for a long time, do not know that a lot of data to express what

Control multiple sites, ensuring that each client in the absence of a request, there shall be no executive communication command

Posted by Antonio at January 08, 2017 - 12:28 PM