CAN-8123/CAN-8223/CAN-8423 user’s manual (Revision 3.00, May/22/2009) ------
163
Step 8. The feedback value for AI is 6.992V.
11-bit COB-ID (bit)
Func Code
Node ID
8-byte Data (byte)
10 9 8 7 6 5 4 3 2 1 0
RTR
Data
Length
0
1
2 3 4 5 6 7
0 1 0 1 0 0 0 0 0 0 1
0
8
80 59 FD
FF
FD FF FD
FF
PDO
consumer
PDO consumer
(CAN-8123/CAN-8223/
CAN-8423)
COB-ID
: 0x281
L
: 8
PDO-msg
: 80 59 FD FF FD FF FD FF
The feedback AI0 value is 0x5980. Users have to transfer this value
to be a float one with the input range from -10V to +10V, and a hex
one with the input range from 0x8000 (-32768) to 0x7FFF (32767).
The value 0x5980 (22912) can be transferred by using the following
equation.
(
)
(
)
(
)
(
) (
)
V
V
V
V
FloatValue
992
.
6
10
10
10
32768
-
32767
32768
22912
≈
−
+
−
−
∗
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
−
−
−
=