Hardware; Baudrate; Interface Parameter - Hameg HM8115 Manual

Hardware

INPUT 2
MAX: 250V/10A
The connection from the PC (COM Port) to the POWER
METER (RS-232 Serial Port) can be made via a standard
extension cable (9 pole D-Sub male to 9 pole D-Sub female)
with 1:1 connection. The cable must be screened and less
then 3 meters long.
Only three wires are used. The pin connections on the
POWER METER and the 9 pole PC COM Port is as follows:
The 1:1 connection of the extension cable causes each data
output to be connected to a data input.
It is recommended to use an adapter (9 pole to 25 pole) if
the PC is equipped with a 25 pole D-Sub connector.

Baudrate

Data transfer can be executed with 1200 Baud or 9600 Baud.
To change the setting proceed as described under item (1)
POWER METER
Pin Name / Function
2 Tx Data / data output
3 Rx Data / data input
5 Pin 2 and 3 reference potential
22
INPUT 2 INPUT 1
OUTPUT 2 OUTPUT 1
PC COM Port (9 pole)
Pin Name / Function
2 Rx Data / data input
3 Tx Data / data output
5 Pin 2 and 3 reference potential
RS232
Power Meter HM8115
GmbH
60528 FRANKFURT
SERIAL PORT
Watts (max.): 15 at 230V 50Hz
AC 50 - 60Hz
Made in Germany
Power Fuse: IEC 127-III. 5x20mm
Träge, temporisÈ, time lag, lento
230V T100mA 115 V T200mA
POWER.

Interface parameter

The RS-232 parameters are:
N, 8, 1, Xon-Xoff (no parity bit, 8 data bits, 1 stop bit, Xon-
Xoff)
Data transfer can be executed by aid of a terminal pro-
gram (e.g. HyperTerminal). After the parameter settings in
the terminal program have been made, the ENTER
(0Dhex) button on the PC keyboard must be pressed
once. Then the first command can be sent.
Änderungen vorbehalten / Subject to change without notice
INTERNAL INSTRUMENT SUPPLY