Rinstrum C500 series, Справочное руководство

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Note
The hexadecimal codes are combined in the fields described above when multiple
options are active at the same time. For example an error response message from
instrument address 5 would have an
ADDR
code of C5
H
(80
H
+ 40
H
+ 05
H
).
18.2.2 Termination
Message termination is possible in two ways. For normal communications that do not involve checksums use
either a
CR LF
(ASCII 13, ASCII 10) as a terminator or a semicolon (‘;’ ASCII). There is no start-of-message
delimiter.
To use a checksum the message is framed as:
SOH <Message> CRC EOT
where:
ˆ
SOH (1 byte): 01
H
ˆ
CRC is a 4 character hexadecimal field comprising the 16 bit CRC checksum. The CRC uses the
16 bit CCITT polynomial calculation and includes only the contents of the “Message” section of the
transmission.
ˆ
EOT (1 byte): 04
H
18.2.3 Error Handling
If a command cannot be processed and a reply was requested, the ERROR bit in the ADDR field is set and
the DATA field is set to an error message. This 2-byte error message is formed by adding a major and minor
error code. For example, the error 0204
H
corresponds to a major error of 0200
H
, and a minor error of 04
H
).
Error Code Error Description
0100
H
Parsing Error The error occurred when interpretting the incoming message.
0101
H
Address error An error occurred when parsing
ADDR
into a number.
0102
H
Command error An error occurred when parsing
CMD
into a number.
0103
H
Reg error An error occurred when parsing
REG
into a number.
0104
H
Chan error The internal channel string is longer than the maximum (9).
0105
H
Delimiter error The colon delimator is not present.
0106
H
Data error The data string is longer than the maximum (200)
0108
H
Framing error The message is too long for the buffer.
0200
H
CRC Error There was a problem with the checksum (CRC).
0201
H
CRC Parse Error The CRC code could not be parsed from the message.
0202
H
CRC Error The CRC code does not match that of the message. The message
was corrupted.
0300
H
Register Error
REG
is not valid, or does not exist on this device.
0400
H
Read Error There was an error reading from the register.
0401
H
Permission error You do not have permission to read this register.
0402
H
Unknown type error Internal error: Register type is not known to RinCmd.
0403
H
No type data error Internal error: Unable to read the registers data structure.
0404
H
Command error The
CMD
is not valid for this register type.
0405
H
Bad data error The stream data is not valid.
0406
H
Null register error The register cannot be found.
0407
H
Buffer size error The string reply will not fit in the transmission buffer.
0408
H
Snprintf error A function within the library has failed to run correctly.
74 C500-600-2.0.3