User manual SEFELEC 5x Series 176 v1.06
RS232C INTERFACE
Note:
IMPORTANT: The RS232C function must be selected in the configura-
tion menu, interface line: RS232
SEFELEC 5x range test and measurement instruments are fitted with a RS232C interface
working in the speak and listen mode. It enables the integration of all the instruments of the
range in an automatic test or measurement system whether it is intended for production con-
trol or entry control.
The implementation of the safety loop is essential. The control of the device
and therefore the generation of a dangerous voltage by RS232C can be done from a
point where visual inspection of the device is not possible.
Preferably use a series DB9 male - DB9 standard female non-crossover and shielded
connection cord to connect the device to the PC. The SEFELEC CO179 cord is not
compatible with this device.
The interface is accessible via a 9-pin connector on the rear of the device. The RS232C
standard describes the hardware aspects for series data transmission. It requires five lines
which are:
Data reception RXD
Data transmission TXD
Terminal ready to receive DTR
Data ready to be sent DSR
Signal ground GND
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