ICP DAS USA CAN-8823, User Manual

Page: 114 / 198

CAN-8x23 user’s manual (Revision 3.20, Ma r/08/2012) ------ 114
Step 8. After changing the value of the event timer, the AI val ue will be
automatically transmitted per second. The example below shows that at the
first time the 2n TxPDO message is received.
11-bit COB-ID (bit)
RTR
Data
Length
8-byte Data (byte)
Func Code Node ID
10 9 8 7 6 5 4 3 2 1 0 0 1 2 3 4 5 6 7
0 1 0 1 0 0 0 0 0 0 1 0 8 00 40 FD FF FF FF FF FF
PDO
consumer
PDO producer
(CAN-8x23)
COB-ID
: 0x281
L
: 8
PDO-msg
: 00 40 FD FF FF FF FF FF
Step 9. The following example shows that at the second time the 2nd TxPDO
message is received.
11-bit COB-ID (bit)
RTR
Data
Length
8-byte Data (byte)
Func Code Node ID
10 9 8 7 6 5 4 3 2 1 0 0 1 2 3 4 5 6 7
0 1 0 1 0 0 0 0 0 0 1 0 8 06 40 FF FF FF FF FF FF
PDO
consumer
PDO producer
(CAN-8x23)
COB-ID
: 0x281
L
: 8
PDO-msg
: 06 40 FF FF FF FF FF FF
The value of 0x4006 is equal to 5.002V. The AI value is changed
because of the noise disturbance or other factors.