Chapter 4 – Temperature Controller
Page 4-6
TestEquity TEC1 Thermoelectric Temperature Chamber
Computer Interface
!
CAUTION:
Every setting in the EZ-Zone Controller can be accessed via the computer
interface. Improper modifications to configuration settings can result in erratic
performance and unreliable operation. The correct values are documented in
the “EZ-Zone Temperature Controller Setup Parameters” section of this
manual.
RS-232C
The EZ-Zone Temperature Controller has an RS-232C interface. A DB-9 connector is located on
the rear panel. It is wired to accommodate a null-modem cable. To communicate with the
controller from a PC, you need to run software that uses 32-bit Modbus RTU protocol. Each
controller function has a “register” number which can be read or written to (when applicable).
These registers are listed Chapters 6 through 9 of the “EZ-Zone PM Controller Communications
Manual”. RS-232C Modbus programming resources can be downloaded from
http://www.testequity.com/ez
.
GPIB (optional)
The optional GPIB interface, model TE-1052, consists of an external converter box (ICS Model
4899A) that connects to the chamber’s RS-232C interface.
Ethernet (optional)
The optional Ethernet interface, model TE-1055, consists of an external converter box (ICS
Model 8099) that connects to the chamber’s RS-232C interface.