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OSMOMAT 050 User Guide
Version 1.1 (2011-10-12)
8.7 Specifications for RS 232 Interface
Baud rate:
Transmission speed: 1200 bps.
Data format:
One start bit, 8 data bits, and 2 stop bits are sent
Signals:
TXD -
Transmit Data (output)
Idle level
-3V >> U >> -7.5V
Active level
+3V << U << +7.5V
DTR -
Data Terminal Ready (output)
This signal indicates the transmission readiness of the OSMOMAT 050, i.e. it becomes active before a
telegram is sent.
Idle level
-3V >> U >> -7.5V
Active level
+3V << U << +7.5V
DSR -
Dataset Ready (input)
This signal can prevent transmission of a telegram. The OSMOMAT 050 starts transmitting only after
DSR becomes active. The user does not need to activate this signal, since it is equipped with an inter-
nal 15 k-Ohm 'pull-up' resistance.
Idle level
-3V >> U >> -15V
Active level
+3V << U << +15V
8.8 Transmission Software
We recommend using our TERMINAL SOFTWARE for easy data transmission to a PC and a data
acquisition that is optimized for the osmometer. In principle, any other terminal software can be used,
but the data format will have to be adjusted.
Summary of Contents for OSMOMAT 050
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