Solid State Cooling Systems THERMOCUBE 200 Product Manual page 22

T C 200/300/400 T
HERMO UBE
RS-232 Communication Protocol
Table 2: Command and Data Bytes
Bit Position
Command Byte Bit 7 (MSB)
Bit 6
Bit 5
Bits 4 – 0
Data Bytes 1 or 2 bytes depending on parameter (see tables 3 and 4)
Timing: ThermoCube 200/300/400 can accept a maximum of three commands per second
Table 3: Control Parameter
Bits 4 – 0 Parameter
00001 Chiller set point 1 temperature
01001 Current fluid temperature at chiller coolant output
01000 Faults from chiller (fan, pump, RTD failure, etc.)
Table 4: Temperature Data Bytes (2 bytes)
The 2 data bytes for the temperature set point and transmission of the current temperature represent the
value of the temperature in 0.1°F increments.
For example:
Temperature (examples)
0.1 °F
1.0 °F
10.0 °F
20.0 °F
30.0 °F
40.0 °F
50.0 °F
60.0 °F
70.0 °F
Table 5: Faults Data Byte (1 byte)
0 = OK, 1 = Fault
Bit Position
0
1
2
3
4
5
6
7
S S C S , 167 M
OLID TATE OOLING YSTEMS
T : (845) 296-1300 F
ELEPHONE
C
HERMOELECTRIC HILLER
Description
Set Remote Control
Remote On/Off
Communication
Direction
Parameters being communicated (see table 2)
High Byte
00000000
00000000
00000000
00000000
00000001
00000001
00000001
00000010
00000010
Fault Assigned
Tank Level Low
Fan Fail
Unassigned
Pump Fail
RTD open
RTD short
Unassigned
Unassigned
C R , W
YERS ORNERS OAD APPINGERS
: (845) 296-1303 :
AX WEB WWW
M
ANUAL
Bit =1
remote control
chiller On
remote to chiller
(command from master)
No of Data Bytes
Low Byte Hexadecimal
00000001
00001010
01100100
11001000
00101100
10010000
11110100
01011000
10111100
Hex value when fault is present
F , NY 12590
ALLS
. .
SSCOOLING COM
52-11300-1
Bit = 0
local control (chiller)
chiller in standby
chiller to remote
(status from chiller)
2
2
1
0001
000A
0064
00C8
012C
0190
01F4
0258
02BC
01
02
N/A
08
10
20
N/A
80
21
V M28
ERSION