Parameter Group Number; Identifier Examples - Baumer Absolute encoder Manual

5.2 Parameter Group Number (PGN)
The Parameter Group Number is an identifier for parameters.
The following PGN's are supported:

PGN 60928 (Name-Field)

PGN 61184 (Encoder Parameters)

PGN 65450 (cyclic process data)
Calculation of Parameter Group Number (PGN):
PDU1 Format:
PGN = "PDU Format Field" * 256 + 0 -> Only every 256 PGN number exist.
PDU2 Format:
PGN = "PDU Format Field" *256 + "Group Extension value"

Identifier Examples

5.2.1
Identifier for Cyclic PGN 65450 message:
PGN 65450 => in Hex =>
 PDU-Field =
 Group Extension = 0xAA
ECU-Address = 172 = 0xAC
Description Priority
Value 6
28 ... 26
Bit
Cob-ID [Hex]
Identifier for Acyclic PGN 61184 message, used for read command from another device to the encoder)
PGN 61184 => in Hex =>
 PDU-Field =
 Dest. Address
Description Priority
Value 6
28 ... 26
Bit
Cob-ID [Hex]
Baumer_EAM580_360_SAE_J1939_MA_EN_Rev0003.0000h_Index0002.docx
06.08.2018
0xFFAA
0xFF (Value > 240 -> PDU2 format with Group Extension is used)

Parameter Group Number

Extended Data PDU Format
Data page Page (PF)
0 0 0xFF
23 ... 16
25 24
0x18FFAAAC
0xEF00
0xEF (Value < 240 -> PDU1 format with Destination Address is used)
= 0xAC (default address of Encoder, could be higher, according to address claim)
Parameter Group Number
Extended Data PDU Format
Data page Page (PF)
0 0 0xEF
23 ... 16
25 24
0x18EFAC00
12/27
Destination Address
Source address
Group extension
(ECU address)
0xAA
0xAC
15 ... 8 7 ... 0
Destination
Source address
Address
(ECU address)
Group extension
0xAC
0x00
15 ... 8 7 ... 0
Frauenfeld, Switzerland
Baumer Electric AG