THERMOCUBE II 200-650W THERMOELECTRIC CHILLER MANUAL 52-14790-1
SOLID STATE COOLING SYSTEMS, 167 MYERS CORNERS ROAD, WAPPINGERS FALLS, NY 12590 22
TELEPHONE: (845) 296-1300, FAX: (845) 296-1303, WEB: WWW.SSCOOLING.COM VERSION M2
7.2 RS-232 COMMUNICATIONS
ThermoCube II can be configured with RS-232. ThermoCube II comes with
two configurable communications protocols: the original ThermoCube Hex
commands or an alternative set of ASCII commands. 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).
7.2.1 RS-232 Communication Specifications
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 DTE
Note: Use a null modem cable if your RS-232 is set up as a DCE.
Communication Specification
Speed: 9600 baud for HEX, 57,600 for ASCII
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 II 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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