Measurement Computing Digital232 - Manual (Page 22)

Section 2 Getting Started
2.14
into the unit. If the problem is unresolved, refer to the Service Information section
of this manual.
Connect a serial cable to the DB-25 connector on the rear of the Digital232.
Connect the other end of the cable to the serial host. Running a dumb terminal
program similar to that shown in Appendix C, type the following....
@ Reset the Digital232
R0 Request data from the Digital232
The Digital232 should respond with 'FFFFFFFFFF'
2.5 Errors
The Digital232 has built-in error checking, to ensure that it has received valid
commands and data, and to alert the user if an inappropriate situation has occurred.
The front panel Error LED will illuminate when an error condition occurs, and will
remain lit until the status command U0 is received. The Digital232 will continue to
operate after an error has occurred, but in the instance of an invalid command, the
command will not be executed and must be re-sent.
The Service Request command M4 can be used to automatically send an SRQ
message to the host whenever an error occurs. This is particularly helpful when first
configuring the system using a 'dumb terminal' program, as described for the IBM PC
in Appendix C. Refer to the Status command (U0) for more information on error
codes.