MPS450
Operators Manual
4-4
The MPS450 executes a command upon a carriage return and/or a line feed.
Alphabetic characters in commands are case-insensitive.
When entering commands, the BACKSPACE key operates normally (that is, deletes the
previously recorded character).
When entering commands, the ESCAPE key discards the entire command.
When a command is completed, a message is sent back (usually “OK”).
Using Remote Entry to Operate In Numeric-Control Mode
In addition to using remote commands to set up wave parameters, one specific remote-
entry command can be used to operate the MPS450 in the numeric-control mode from a
peripheral device:
NUMENT=num (where num is a numeric-control code)
For example, entering the remote command
NUMENT=017 runs a simulation of atrial
tachycardia—just as if the MPS450 was being operated in the numeric-control mode, the
number keys 017 were pressed on the MPS450 keypad, and RUN was selected.
A list of numeric-control codes—cross-referenced both to actions and to remote-entry
commands—is available in the “Codes and Actions” section later in this chapter.
General Remote Commands
The general remote commands are listed in Table 4-2:
Table 4-2. General Remote Commands
Remote Command Action
IDENT Identifies the instrument. Returns “MPS450; version; options,” where
version is the version of the firmware program and options equal “C” for
Cardiac Output, and/or “F” for Fetal / Maternal.
VER Returns the firmware version.
NUMENT=num Executes a numerical entry function, where num equals the 3-digit number
to execute.
Error Messages
Invalid commands return error messages, including the following:
• “ERR=00, NO COMMANDS ALLOWED AT THIS TIME”
• “ERR=001, UNKNOWN COMMAND”
• “ERR=02, ILLEGAL COMMAND”
• “ERR=03, ILLEGAL PARAMETER”
• “ERR=04, DATA CORRUPTED”
• “ERR=05, UNKNOWN ERROR”
• “ERR=06, OPTION NOT INSTALLED”
• “ERR=20, INVALID NUMERIC ENTRY”
• “ERR=21, ILLEGAL SWAN-GANZ COMMAND”
Codes and Actions
This section lists the code numbers for controlling MPS450 actions, including both
numeric-mode and remote-control-entry codes. (See the Table of Contents for this
chapter to locate a specific action.)
The code numbers used in the numeric-control mode range from 000 to 420, with most of
the numbers from 0 through 247 matching the numbers used previously by the