I-7530 RS-232/CAN Converter User’s Manual (Version 2.5, Mar/2012) ------------- 36
5. Troubleshooting
If the Error response function on the I-7530 module is set to be
“Yes”(that means enable) via the I-7530 Utility during the configuration
period, the I-7530 will send the error code to the RS-232 device of the
host PC through the RS-232 media when the I-7530 produces an error
message automatically during the operation mode. The meanings of these
error codes are given below:
Table 12: Error code table
Error
code
Description
Possible causes & solutions
1 Invalid
header
The RS-232 command string header is not
“t”,”T”,”e”,”E”,”S”,”C”,”P0”, ”P1” nor “RA”.
2 Invalid
length
The data byte of the CAN Message does not match
the data length of the CAN Message. For example:
Error: t001512345<CR>
Right: t00150102030405<CR>
3 Invalid
checksum
The checksum from the RS-232 command string
does not matched with the checksum calculated by
the I-7530. For example:
Error: t0012112209<CR>
Right: t00121122FD<CR>
5 Timeout
The ASCII command strings are sent incomplete.
For example:
Error: T0018
Right: T0018<CR>
If the I-7530 CAN baud rate is not the same as the CAN baud rate on
the CAN network, the ON LED on the I-7530 will be flash with a constant
frequency because the I-7530 cannot send any CAN messages to the
CAN network. Therefore, users will need to read the I-7530 status by
using the command “S[CHK]<CR>”(in the section 4.5) to help users
understand what is going in the module. In general, the following errors
could occur: CAN media connection problem, terminal resistor problem,
different baud rate configuration with CAN network and the like.
