Mydax, Inc.
Appendix A
RS-232
Page A-4
C) Set point Temperature in °C
D) Calculated temperature in °C of the refrigerant line at the suction pressure
transducer
E) Pressure in PSIg of the refrigerant line at the suction pressure transducer
F & G) Temperature in °C in the refrigerant line at the Superheat and Condenser
RTDs
H) Temperature in °C in the refrigerant line at the Discharge RTD (2-stage design
only)
I ) Temperature in °C in the refrigerant line at the Subcooler RTD (inactive)
J & K) Valve drives of evaporator valves 1 and 2; valve 2 is inactive in single
channel systems (See "DIAGNOSTIC DISPLAYS, Test Panel 1" for explanation of drive
signals.)
L, M & N) Bypass, Superheat, and Desuperheat valve drives. Desuperheat is not
available in all designs.
O & P) Heater drive signals; Heater 2 is inactive in single channel systems (See
"DIAGNOSTIC DISPLAYS, Test Panel 1" for explanation of drive signals.)
Q) Flow rate in gallons-per-minute(GPM) of recirculation fluid. On systems without a
flow meter, this number has no meaning.
R) Any active alarms, by code # (See the next section for a description of alarm
codes.)
S & T) Actual code # for the alarm
U) Stop is displayed whenever the system is halted
V) Indicates the origin of the Stop Command (status message "S") whether it is
from the system front panel (
KEY
), the external stop line (
EXT.)
, an RS-232C
command (
RS232
) or it originated from a fatal alarm (
FATAL
).
