CAN-8x23 user’s manual (Revision 3.20, Ma r/08/2012) ------
161
about the input/output range of different analog I/O modules. In the following
paragraph, a simple example will be given. Please note that the hardware and
wire connection are the same as the situation used in the PDO example.
Step1: Users can send the NMT message to set the NMT operational state on
the CAN-8423.
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
0 0 0 0 0 0 0 0 0 0
0
8
01 01 00
00
00
00
00
00
NMT master
NMT slave
(CAN-8x23)
cs
:
1
Node ID
:
1
Step 2. Users can send the SDO message to confirm the output range value of
the I-8024 AO channel 0.
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
1
1 0 0 0 0 0 0 0 0 1
0
8
40 06 20
01
00
00
00
00
SDO client
SDO server
(CAN-8x23)
ccs
:
2
m
:
06 20 01