FTS MAXI-COOL, Operator'S Manual, Page: 47 / 66

Maxi-Cool
EDC Programmer’s Reference
Rev 007, 04/12 39
© SP Scientific 2012
Values for system characteristics which are not programmable parameters: e.g .,
switches, on/off status, etc. , will be returned as byte status. In other words, if the state
is "true", the returned value will be +0000255 (byte true hex FF); if the queried status
is false, or off, the returned value will be +0000000 (byte false hex 00).
Example:
Received string: SP? 1.
Transmitted message: OK <CR> 2.
F057= 0030.00!<CR> 3.
(Function #57, Setpoint, is currently -30 degrees) 4.
Terminator
The exclamation point ("!") is issued prior to the last <CR> to indicate "end of
message", so that multiline messages may be accommodated. To facilitate message
parsing by column position, this position is left with a "space" if the line is not the last
of the message.
Commands and Codes
Command Set
The following commands are defined to the interface. Certain commands, while
syntactically acceptable to the parser, will result in the error code "Not Yet
Implemented" (nyi); these have been defined for future expansion or options.
The command opcode (function "F" number) which will be returned by a query
appears in curly-brackets following each query command. Upper case is used to note
other [referenced] commands.
ALARMH= / ALARMH? {F001}

Set or query the user setting of the overtemperature (high) alarm condition, in
degrees. Limits are imposed by FLUID= and the factory-set system span
(SSPANH).
ALARML= / ALARML? {F002}

Set or query the user setting of the undertemperature (low) alarm condition, in
degrees. Limits are imposed by FLUID= and the factory-set system span
(SSPANL).
ALMCODE? {F076}

Query the status of the system alarm table. A reply of 0 indicates a no-alarm
condition. Other codes are documented in a separate section, below.
BAUD? {F003}

Report the present BAUD rate in use in the communication link. Values
returned will be the same as those programmed via the system control panel:
0=300, 1=1200, 2=2400, 3=9600.