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8
Digital Communication Interface
The calibrator is capable of communicating with and being controlled by other
equipment through the digital serial interface.
With a digital interface the instrument may be connected to a computer or other
equipment. This allows the user to set the set-point temperature, monitor the
temperature, and access any of the other controller functions, all using remote
communications equipment. Communications commands are summarized in
Table 2 on page 33.
8.1
Serial Communications
The calibrator is installed with an RS-232 serial interface that allows serial dig-
ital communications over fairly long distances. With the serial interface the user
may access any of the functions, parameters and settings discussed in Section 8
with the exception of the baud rate setting.
8.2
Wiring
The serial communications ca-
ble attaches to the calibrator
through the D-9 connector at
the back of the instrument. Fig-
ure 5 shows the pin-out of this
connector and suggested cable
wiring. The serial cable should
be shielded. If the unit is used in
a heavy industrial setting the
shielded cable must be limited
to one meter.
8.2.1
Setup
Before operation the serial in-
terface must first be set up by
programming the baud rate and
other configuration parameters.
These parameters are pro-
grammed within the serial inter-
face menu. The serial interface
parameters menu is outlined in
Figure 4 on page 22.
To enter the serial parameter
programming mode press
"SET" and "EXIT"
8 Digital Communication Interface
Figure 5 Serial Cable Wiring
Serial Communications
31
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