I-7530A-MR Modbus RTU to CAN
Converter User’s Manual (Version 1.08, 07/2019) ------------- 55
4.10
General Error code for all command
If the Error response function on the I-7530A-MR_MR module is set to be
“Yes”(that means enable) via the I-7530A-MR Utility when configuration, the I-
7530A-MR will automatically send the error code to the RS-232/485/422 device
or the host PC through the RS-232/485/422 media when the I-7530A-MR
produces an error message during the operation mode. The meanings of these
error codes are given below:
Table 4-8: Error code table
Error
code
Description
Possible causes & solutions
1
Invalid header
The header of the RS-232/485/422
command string is not
“t”,”T”,”e”,”E”,”S”,”P0”, ”P1”,”P2” nor “RA”.
2
Invalid length
The numbers of data 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 of the RS-232/485/422
command string does not match with the
checksum calculated by the I-7530A-MR. For
example:
Error: t0012112209<CR>
Right: t00121122FD<CR>
4
Buffer overrun
The transmission buffer
verrun is happened,
users should retransmit the message later
when this module is normal.
5
Timeout
The ASCII command strings are sent
incomplete.
For example:
Error: T0018
Right: T0018<CR>
