Paxar Monarch 9412 Reference Manual page 108

The following syntax is the response for a Job 3 request.
Syntax
"Status1 A,B"
Example
2 is the field number where an error was found. 612 is the error
number, indicating that data is missing or does not match the
format definition for that field.
"Status2 A,B,C,D,E" contains the packet type, field type, field
Status2
A- Packet Type
Status2
B- Field Type
7-10 Status Polling
{J,"Status1 A,B","Status2
A,B,C,D,E","FMT-1","BCH-2"}
Status1 A contains the field number, in the
format or batch, where an error was found. If
the error is not in the format or batch, a "0" is
returned.
Status1 B contains an error number, which
represents the actual printer error. The error
numbers can be found in Chapter 9, "Errors."
{J,"2,612",}
Error numbers found in Status1 B, always
have a value equal to or greater than 500.
These are considered very serious errors.
number, parameter, and error number.
represents the MPCLII packet that the error
occurred on. The packet could be Format (F),
Batch (B), Check Digit (A), or Font (W).
represents the MPCLII field that the error
occurred on. If the packet has no fields,
Status2 A will be replicated. If the error
occurs before the field is identified a question
mark is sent. Since the batch data is
variable, a D is sent to indicate data.