Remote Control Of Chamber Temperature And Humidity Set Points; Digital Communications; Figure 13 Humidity And Temperature Setting Switches - Michell Instruments OptiCal User Manual

OPERATION
3.4

Remote Control of Chamber Temperature and Humidity Set Points

To enable remote control of temperature and humidity set points follow the instructions
below:
1. Put the
2. Put the
3. Set the
to the
ON
4. Put the Optidew in
5. The OptiCal temperature and humidity set points can now be controlled
from the OptiCal application software. Refer to Section 3.4.3 and Section
3.4.4.
NOTE: If the OptiCal is used with manual set-points, put the switches into
the MAN position (refer to Section 3.3).
3.4.1

Digital Communications

Located on the front panel is a 9 way 'D' connector, which is used to communicate with
Opti-Soft application software or with an ASCII terminal program (see Section 5).
The communication interface is RS232.
NOTE: To enable remote control of the chamber set points, both the front
panel
AUTO/MAN
COMMUNICATIONS
Mode. Refer to Section 3.4.2 and Section 4.1.
12
4 5 0
Chamber Set
Display Control
Humidity
Humidity and Temperature Setting Switches
Figure 13
switches into the
AUTO/MAN
switches into the
ON/OFF
REMOTE COMMUNICATION
position.
REMOTE
Pin number
2
3
5
switches should be set to
switch set to
Auto On On Auto
Man. Off Off Man.
Chamber Set
Temperature
position.
AUTO
position.
ON
switch on the back of the instrument
Mode. Refer to Section 4.1.
RS232
Tx
Rx
GND
AUTO
. The Optidew should also be in
ON
OptiCal User's Manual
2 4 5
and the rear panel
97079 Issue 9.2, March 2016
REMOTE
REMOTE