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DIRECT CONNECTION BETWEEN RS485 AND RS232 WITHOUT CONVERTER
Since a two-wire RS485 output may be used directly on the RS-232 input of a PC or remote display,
it is possible to implement instrument connection to an RS-232 port in the following manner:
INSTRUMENT
RS232
RS485
–
→
RXD
GND
→
GND
This type of connection allows A SINGLE instrument to be used in a ONE WAY
mode.
TEST
-
Input Test:
: ensure that for each open input
is displayed,
is displayed when the input is closed.
-
Output Test:
: setting
ensure that the corresponding output opens. Setting
ensure that the
corresponding output closes.
-
Analog Output Test: (TLUANA MODEL ONLY)
: It allows the analog signal to range between the minimum and the maximum values
starting from the minimum.
: current output test.
: voltage output test.
-
Millivolt Test:
: displays the load cell response signal in mV with four decimals.
