4-21
4 Message Communications
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
4-2 Un
it C
onf
igu
ratio
n an
d Co
ntro
l
4
4-
2-8 Setting the
CAN Bit R
ate and Sample Point (290
9)
The bit rate can be set in 2 ways:
•
The 8 bit rates recommended by CANopen can be selected with the DIP-switches on the front of the
Unit. This gives the user some pre-defined bit rates.
•
If the User wants to set another bit rate, the bit rate can be set via the message command Setting the
CAN bit rate and sample point (2909). If the values for these settings are within the ranges specified
in the table below, the bit rate is set according these settings. If a wrong setting is made, the bit rate
is set to the bit rate selected with the DIP-switches at the front of the Unit. If the command is correct,
the Unit will return a response of the specified bit rate and sample point which are in use.
The following table defines the minimum and maximum values for each item in the command block with
setting details.
Issuing a Setting the CAN Bit Rate and Sample Point command will result in the following response
End Codes (apart from the standard command length checks).
4-2-8
Setting the CAN Bit Rate and Sample Point (2909)
Command Block
Setting
Minimum Value (Hex)
Maximum Value (Hex)
Setting Details
Bit Rate
0000 0000
0012 12D0 (1.25 Mbit/sec) Bit rate
Sample Point
0000
0064
See
Response Block
End Code (hex)
Description
Condition
Correction
No response
---
Unit state = ST1 or ST2
Restart the CPU and make
sure that the unit is mounted
and wired correctly
0000
1
Normal completion
Unit state = ST3 or ST4 and
all parameters are in range
Command is executed and
operation is normal.
1001
Command length exceeds
maximum command length
---
Too many parameters sent in
the command.
Correct the command and re-
send.
09
29
Command
Code
Sample
point in %
Bit Rate
(bits per second)
09
29
Command
Code
Sample
point in %
Bit Rate
(bits per second)
End
Code
Summary of Contents for CJ1W-CORT21
Page 2: ......
Page 140: ...Appendices A 6 CJ series User Defined CAN Unit Operation Manual for NJ series CPU Unit W517...
Page 141: ...Index 1 CJ series User Defined CAN Unit Operation Manual for NJ series CPU Unit W517 I Index...
Page 144: ...Index 4 CJ series User Defined CAN Unit Operation Manual for NJ series CPU Unit W517 Index...