Modbus Parameter Specifications

MODBUS ACE V1.00
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ebm-papst Mulfingen GmbH & Co. KG
Bachmühle 2 ·74673 Mulfingen ·Phone: [phone] ·Fax: [phone] ·www.ebmpapst.com ·[e-mail]
DocNo.: 634505DocNo: 446144DocNo.:358982DocNo.:322523DocNo.:309753DocNo.:303997DocNo.:276241DocNo.:256078DocNo.:196392 ·Template: 2 dated 10/6/2003 ·File: ext001931381.docx ·Last printed 9/30/2019 10:29:00
AM ·Page 60 of 78
Form 1003
2.47 Manufacturing data
The manufacturing data contain information to be able to identify the device concerned. Fan action is not
influenced by these parameters.
2.47.1 Fan serial number and date of manufacture
Serial number address : D1A2 / D1A3
Date of manufacture address : D1A4
Write authorization : ebm-papst
ebm-papst allocates an individual serial number for each fan. The part which customers can read out is made
up of the date of manufacture and the consecutive number. Addressing is also possible with this. Should any
unexpected problems arise, please inform us accordingly.
Format: YYWW00XXXX
YY : Year of manufacture
WW : Week of manufacture
00 : Fixed value 00
XXXX : Consecutive number
The first 4 characters contain the date of manufacture (year / week).
The number XXXX starts running at zero at the start of each week of manufacture and is incremented by 1
for each fan. Each character can assume values from 0-9 and from A-Z. This yields a maximum encodable
number of 36 characters per position, i.e. 36
4
= 1 679 616 devices / week
a) Serial number (D1A2 / D1A3)
Only the XXXX part (consecutive number) is stored in the parameter "Serial number".
Each character is encoded as an ASCII value.
Coding:
bytes DataASCII number Serial 
b) Date of manufacture (D1A4)
The YYWW part is stored in the parameter "Date of manufacture".
Each character is encoded as a hex value.
Coding:
(LSB)bytes Data weekProduction
(MSB)bytes Datayear Production


Example:
ebm-papst serial number: 09230012GY
-> Content D1A2: 0x4759 (GY)
Content D1A3: 0x3132 (12)
Content D1A4: 0x0917 (09/23)