TestEquity 123H, Руководство по эксплуатации и обслуживанию

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Chapter 4 – F4 Temperature/Humidity Controller
Page 4-20 TestEquity 123H Temperature/Humidity Chamber
Factory Page
The Factory Page provides access to menus for controller diagnostics and calibration. TestEquity
has configured the security to require a password for access to the Setup Page. However, there
will be times when entry into these menus is necessary. For example, you may need to gain
access to Factory Page in order to perform a calibration, or to change the security password. You
must call TestEquity at 877-512-3457 or 805-480-0638 to obtain the password.
!
CAUTION: NEVER select “Full Defaults” in the Factory/Test Menu. This will erase all
the correct values which are documented in the “Series F4 Temperature
Controller Setup Parameters” section of this manual.
Computer Interface
!
CAUTION: Every setting in the F4 Controller can be accessed via the computer interface.
Improper modifications to configuration settings can result in erratic
performance and unreliable operation.
RS-232C
The F4 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 the Modbus RTU protocol. Each controller
function has a “register” number which can be read or written to (when applicable). These
registers are listed Chapter Seven of the “Series F4 User’s Manual”. RS-232C Modbus
programming resources can be downloaded from
http://www.testequity.com/RS232 .
Common Modbus Registers
•
Actual chamber temperature reading is register 100 (Input 1 Value).
•
Actual chamber humidity reading is register 104 (Input 2 Value).
•
Static temperature set point is register 300 (Set Point 1).
•
Static humidity set point is register 319 (Set Point 2).
•
Temperature set point during a profile is register 4122 (Set Point 1, Current Profile Status).
•
Humidity set point during a profile is register 4123 (Set Point 2, Current Profile Status).
•
Decimal points are implied. For example, 1005 is actually 100.5 and -230 is -23.0.
GPIB (optional)
The optional GPIB interface consists of an internal board which converts the F4 controller’s
serial interface to GPIB. Chambers with a GPIB interface have a GPIB connector in place of the
RS-232C connector. GPIB programming resources and LabVIEW drivers can be downloaded
from
http://www.testequity.com/GPIB
.
Ethernet (optional)
The optional Ethernet interface, model TE-1055, consists of an external converter box that
connects to the chamber’s RS-232C interface. Ethernet programming resources can be
downloaded from
http://www.testequity.com/ETHERNET
.