Example Of A Segmented Data Transmission - IFM Electronic Ecomot100 CANcom III Handbuch

Example of a segmented data transmission

The controller (master) requests the current network operator from CANcom
PDO type (action)
Master-Command-PDO
Master requests
from CANcom
• the current network operator
CANcom-Data-PDO
CANcom starts
the segmented data transmission
• identifier for start message
• source channel 3 (network operator)
• data length 28 bytes (low)
Master-Data-PDO
Master sends to CANcom
• identifier for acknowledgement
• 0 byte (low) received so far
CANcom-Data-PDO
CANcom sends to Master
• identifier for data message
• 7-byte user data
Master-Data-PDO
Master sends to CANcom
• identifier for acknowledgement
• 7 bytes (low) received so far
CANcom-Data-PDO
CANcom sends to Master
• identifier for data message
• 7-byte user data
Master-Data-PDO
Master sends to CANcom
• identifier for acknowledgement
• 14 bytes (low) received so far
CANcom-Data-PDO
CANcom sends to Master
• identifier for data message
• 7-byte user data
Master-Data-PDO
Master sends to CANcom
• identifier for acknowledgement
• 21 bytes (low) received so far
CANcom-Data-PDO
CANcom sends to Master
• identifier for data message
• 7-byte user data
Master-Data-PDO
Master sends to CANcom
• identifier for acknowledgement
• 28 bytes (low) received so far
COB ID
0
0x200 + Node ID 00
0x280 + Node ID 00
0x300 + Node ID 02
0x280 + Node ID 01
0x300 + Node ID 02
0x280 + Node ID 01
0x300 + Node ID 02
0x280 + Node ID 01
0x300 + Node ID 02
0x280 + Node ID 01
0x300 + Node ID 02
CAN
Data byte (value)
1 2 3 4 5
01 00 00 00 00
03 00 1C 00 00
00 00 00 00 00
6C 65 31 44 72
00 07 00 00 00
15 34 65 43 23
00 0E 00 00 00
45 75 3F 4D 56
00 15 00 00 00
30 0D 22 22 22
00 1C 00 00 00
CR310
COM X
6 7
00 00
00 00
00 00
13 36
00 00
1A 33
00 00
23 34
00 00
22 22
00 00
65
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