Section 7; Usb Communications - Solid State Cooling Systems THERMORACK 800 Product Manual

T R 800 T
HERMO ACK HERMOELECTRIC
S 7
ECTION
7.1 USB C
OMMUNICATIONS
The Thermorack 800 comes with a USB serial communications capability that can receive a remote set
point, return the current temperature, and signal an alarm has occurred. Communicating with the chiller
via USB with requires installing a Silicon Labs CP210x driver on the host computer. Call SSCS at 845-
296-1300 ext. 324 to receive a copy of this along with installation instructions. USB communications
software is also available.
Connector Type:
Speed:
Number of Start bits:
Number of Stop bits:
Parity:
Maximum Polling Frequency: One command every 500msec
Data Update Frequency:
Host/Device:
Interrupts Reported:
Data Format:
Table 2 USB Commands
PARAMETER
Show all parameters
(see next page for details)
Show chiller identification
information
Put chiller in LOCAL mode
Chiller: run, stop
RTD temp
Set-point Temperature
Temperature Alarm width (+/-)
RTD offset
Display backlight on/off
Pump temperature
Actual TE PWM %
Status word 1 (5 ASCII bytes)
Faults word 1 (5 ASCII bytes)
Reset All Alarms and Restart
NOTES:
1. All commands are case insensitive
2. The chiller will automatically begin operating in REMOTE mode upon initiation of USB
communications. This will lock-out the keypad.
The chiller performs actions upon receiving LOCAL, RUN/STOP and BLON/BLOFF commands,
3.
but does not send back a USB response.
S S C S
OLID TATE OOLING YSTEMS
T : (845) 296-1300 F
ELEPHONE
C
HILLER
________________________________________
Type-B
9600 baud
1
1
None
Once per second
Thermorack 800 is the device, PC is the host
None, must be polled for status
ASCII
Insert a carriage return (0x0D
A carriage return (0x0D
GET Data
Command
GETSET2
IDN
RUN?
TEMP?
SETTEMP?
WIDTH?
RTDOFFSET?
-
PUMPTEMP?
PWM?
STAT1A?
FLTS1A?
, 167 M C R , W
YERS ORNERS OAD
: (845) 296-1303 :
AX WEB WWW
) at the end of each command string.
hex
) is sent at the end of each response
hex
Response
TEMP, SETTEMP,
PUMPTEMP, PWM?,
FANPWM, TLL,
STAT1A, FLTS1A
Solid State Cooling, Product
Name, Model#, Software
Number & Revision, Serial
Number
RUNNING or STOPPED
(-)XX.X
(-)XX.X
XX.X
(-)XX.X
(-)XX.X
(-)XX.X
0 - 65535
0 - 65535
F , NY 12590
APPINGERS ALLS
. .
SSCOOLING COM
52-13007-1
PUT Data Response
Command
LOCAL
RUN, STOP
SETTEMP (-)XX.X
WIDTH XX.X
RTDOFFSET (-)XX.X
BLON, BLOFF
RESTART
V
ERSION
16
M8