Delta OHM HD32.3, Руководство по эксплуатации

Страница: 46 / 74

HD32.3
- 46 -
V1.4
7. SERIAL AND USB INTERFACES
HD32.3 has a RS-232C serial interface, galvanically isolated and it has a USB 2.0 interface. As an
optional, we can supply, under request:
•
RS-232C serial connection cable (code HD2110/RS ) with M12 connector from instrument
side and 9-pole female connector sub D from the PC side.
•
USB 2.0 connection cable (code HD2110/USB ) with M12 connector from instrument side
and USB 2.0 connector from the PC side.
The USB connection requires the previous installation of a driver included in the DeltaLog10 soft-
ware package.
Install the driver before connecting the USB cable to the PC (follow the
instructions included in the software package).
The instrument standard RS232 serial transmission parameters are:
•
Baud rate 38400 baud
•
Parity None
•
N. bit 8
•
Stop bit 1
•
Protocol Xon / Xoff.
It’s possible to change the speed of RS232C serial data transmission acting on “ Selection of serial
transfer speed (Baud Rate) ” inside the menu (see the menu of the chapter 5.3.1 Baud Rate ). The
possible values are: 38400, 19200, 9600, 4800, 2400, 1200. The other transmission parameters are
fixed.
The USB 2.0 connection does not require the setting of parameters (Baud rate = 460800 fixed).
The port selection is directly done by the instrument: if USB port is connected to a PC, RS232
serial port is automatically excluded and vice versa.
The instruments are provided with a complete set of commands and data request to send by PC.
All the commands transmitted to the instrument must have the following structure:
XXCR where: XX is the command code and CR is the Carriage Return (ASCII 0D).
The command characters XX are only capital, the instrument responses with "&" if the com-
mand is correct, with “?” for each characters combination that is wrong.
The response string of the instrument is finished, entering CR (Carriage Return) and LF (Line Feed)
commands.
Before entering the commands to the instrument through the serial port, we suggest you to block the
keyboard to avoid working conflicts: use P0 command. At the end of the process, restore the key-
board use with P1 command.
Command Response Description
P0 & Ping (locks the instrument keyboard for 70 seconds)
P1 & Unlocks the instrument keyboard
S0
G0 Model HD32.3 Instrument model
G1 M=WBGT Index Model description
G2 SN=12345678 Instrument serial number
G3
Firm.Ver.=01.00
Firmware version
G4
Firm.Date=2008/10/12
Firmware date
G5
cal 2008/11/10 10:30:00
Calibration date and time
C1 Probe 1 type, serial number, calibration date