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PM
-
3133i User’s Manual v1.00
Last Revised: Sep. 2019 Page: 45
Copyright © ICP DAS Co., Ltd. All Rights Reserved.
E-mail: [email protected]
8.2.2 PDO Introduction
8.2.2.1 PDO COB-ID Parameters
Before the real-time data are transmitted by the PDO, it is necessary to check the
COB-ID parameter of this PDO in the PDO communication objects. This parameter
setting controls the COB-ID of the PDO communication, which is in 32 bits, and each bit
with its meaning is given in the table follow.
Bit Number
Value
Meaning
31(MSB)
0
PDO exits (PDO is valid)
1
PDO does not exist (PDO is not valid)
30
0
RTR allowed on this PDO
1
No RTR allowed on this PDO
29
0
11-bit ID (CAN 2.0A)
1
29-bit ID (CAN 2.0B)
28-11
0
If bit 29=0
X
If bit 29=1: 28-11 bits of 29-bit COB-ID
10-0(LSB)
X
10-0 bits of COB-ID
Note: PM-3133-CPS supports CAN 2.0A only.
In the following table, it’s regarding the default PDO COB-ID parameters.
Number of PDO
Default COB-ID
Bit10~Bit7
(Function Code)
Bit6~Bit0
TxPDO1
0011
Node-ID
TxPDO2
0101
Node-ID
TxPDO3
0111
Node-ID
TxPDO4
1001
Node-ID
RxPDO1
0100
Node-ID
RxPDO2
0110
Node-ID
RxPDO3
1000
Node-ID
RxPDO4
1010
Node-ID