Solid State Cooling Systems THERMOCUBE 200 Product Manual page 23

T C 200/300/400 T
HERMO UBE
Notes:
1) Each data set is independent and can be run separately
2) The command byte is always active, so be careful when sending that the three most significant bits
(bits 5-7) are set correctly. Bit 7 is remote operation (1 = remote), bit 6 is ON/OFF (1 = ON = unit
controlling temperature), bit 5 is Data direction (1 = host to controller, e.g. host sends set point to
controller).
3) The ThermoCube 200/300/400 can store 8 bytes of transmission and can only handle up to 3
commands per second.
4) The ThermoCube does not echo back commands from the host.
5) If RS-232 communications does not seem to be functioning, cycle the main power to reset.
RS-232 Communication Examples:
Example
1) Send set point of 25°F to chiller
2) Receive chiller set point
3) Receive RTD temperature
4) Receive the faults table
5) Send Remote Start only
6) Send Remote Stop only
S S C S , 167 M
OLID TATE OOLING YSTEMS
T : (845) 296-1300 F
ELEPHONE
C
HERMOELECTRIC HILLER
Host sends command byte = E1 (hex)
Host sends LOW data byte = FA (hex)
Host sends HIGH data byte = 00 (hex)
Host sends command byte = C1 (hex)
Chiller sends LOW data byte = set point value in hex (LB)
Chiller sends HIGH data byte = set point value in hex (HB)
Host sends command byte = C9
Chiller sends LOW data byte = actual temp in hex (LB)
Chiller sends HIGH data byte = actual temp in hex (HB)
Host sends command byte = C8
Chiller sends faults data byte = fault data in hex
Host sends command byte = E0
Host sends command byte = A0
C R , W
YERS ORNERS OAD APPINGERS
: (845) 296-1303 :
AX WEB WWW
M
ANUAL
Communications Sequence
F , NY 12590
ALLS
. .
SSCOOLING COM
52-11300-1
22
V M28
ERSION