Ashcroft ATE-2 - Handheld Calibrator User Manual
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SECTION 15 m.
COMMUNICATIONS INTERFACE
The HHC can be connected to a PC running Windows XP or Win-
dows 7 or 8 via the USB port. Windows will recognize the HHC
as a Communications Port. The HHC has three communication
protocol modes:
Inquiry/Journal mode: These communications modes are
included in standard HHC models. HHC acquisition data can be
accessed via a Windows terminal emulation programs including
Windows HyperTerminal or TeraTerm.
Inquiry mode is similar to manual datalogging where a data point
will be sent to the PC based on a user defined character from the
PC keyboard.
Journal mode is similar to Automatic Datalogging mode where
the operator can set a timed interval between data points being
communicated to the PC.
In the Journal/Inquiry communications mode the HHC will output
a string indicating the current acquired data from modules and
external inputs. The string will contain the data and units for the
Channel 1, Channel 2 modules as well as the external input
(mA/V). Each item is delimited by a space character. The items
will be the same as are enabled on the HHC display. Units> Other communication protocols: format the HHC exposes commands for acquiring data, access- ing internal calibration data, and accessing datalogs. ISO1745 commands and format are documented in Appendix C in section 16c of this manual. RTU communication protocol format, the HHC exposes com- mands for acquiring data and accessing internal calibration. MODBUS commands and format are documented in Section 16c. (Visual Basic, Visual C#, LabView, etc.), may use one of the above modes to acquire data from the HHC. a Phillips head screwdriver. SECTION 15 m. i. USB Cable Installation
for example:
ISO1745: Using the standard ISO1745 communication protocol
MODBUS: This mode is optional. Using the standard MODBUS
Windows programming environments that support com ports,
USB Cable Installation
To expose the com port, the access cover must be removed with