THERMOCUBE 200/300/400 THERMOELECTRIC CHILLER MANUAL 52-11300-1
SOLID STATE COOLING SYSTEMS, 167 MYERS CORNERS ROAD, WAPPINGERS FALLS, NY 12590 20
TELEPHONE: (845) 296-1300 FAX: (845) 296-1303 WEB: WWW.SSCOOLING.COM VERSION M28
7.2 RS-232 COMMUNICATIONS OPTION
The ThermoCube 200/300/400 comes with a modified (pin-out)
RS232 communication port. The chiller uses this port to
communicate a comprehensive set of control parameters with a Host
PC - these parameters are outlined in Section 7.2. This port is a 9-
pin female d-sub connector and is found on the rear panel of the
chiller (see Figure 3C and 3D).
-R2: RS-232 Communication Specification
Wiring: Proper wiring depends upon whether the equipment being cooled (the Host) is wired as Data
Computer Equipment (DCE) or Data Terminal Equipment (DTE)
Table 1A: Signal definition and wiring for Host wired as DCE
Host / Master (DCE)
9-Pin D-sub Pin #
ThermoCube / Slave (DTE)
9-Pin Female D-sub Pin#
Note: Use a null modem cable if your RS-232 is set up as a DTE.
Communication Specification
Speed: 9600 baud
Data Flow Control: None
Data Format: 8-bit serial
Number of Stop bits: 1
Parity: None
Transmission Breakdown: One command byte followed by zero, one, or two data bytes depending
on data type.
Master/Slave: ThermoCube is always the SLAVE (DTE)
Interrupts Reported: None, must be polled for status
Transmission Length: < 15 meters
Data Update Frequency: Once per second
Maximum Polling Frequency: Three commands per second
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