SP Scientific RS Series, Operator'S Manual, Page: 47 / 60

RS44XX2MCT Chiller RS-232 Communications
Rev 004, 04/12 39
© SP Scientific 2012
REV? {F052}

Query [embedded] software revision level in system program ROM.
RFC

Command to restore factory-determined calibration constants.
RR= / RR? {F054}

Set or query setpoint transition rate (Ramp Rate), in degrees per second.
STOPBITS? {F055}

Query the programmed number of Stop bits in the RS-232 communication
definition. Values may be 1, 1.5, or 2.
SP= / SP? {F057}

Query or set the system temperature setpoint, in degrees.
SSPANH? {F058}

Query the factory-set maximum allowable setpoint, in degrees (determined by
system hardware complement).
SSPANL? {F059}

Query the factory-set minimum allowable setpoint, in degrees (determined by
system hardware complement).
START / START? {F060}

Command to turn the system on (subject to positions of PUMPSW and
REFRSW) and to initiate the system temperature control software. Query to
determine whether the system is running (0 = off, -1 = on).
STATUS? (Not implemented, obsolete).

STOP

Command to turn the system off, restore displays and controls to idle.
SYSHOURS? {F063}

Query number of running hours accumulated on the system, as determined
by the number of running hours on the pump.
TEMPLI? (Service use) {F064}

Query temperature, in degrees, of suction line, for control of liquid-injection
valve in refrigeration hardware.
TEMPST1? (Service use) {F065}

Query temperature, in degrees, of the cascade condenser (heat-exchanger
output of the first refrigeration stage in a two-stage system).
TIME= / TIME? (Not yet implemented) {F066}

Set or query time of day in Real-Time Clock option.
TRIPLI? (Service use) {F067}

Query factory-programmed trip temperature of suction line, to determine
operation of the liquid injection valve.