UniData Communication Systems Starlog Prologger 7001, User Manual

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7.1 Computer Connector Pin Designations
The following table lists each pin in the COMPUTER connector by number.
Next to the pin number is a signal description. The last column explains how
the pin is used.
Pin Signal Description Usage
1 Signal and logic ground Ground
2 Serial data signal to logger RxD
3 Serial data signal from logger TxD
4 RTS from computer RTS
6 DSR from logger DSR to CPU
7 Signal Ground GND
10 Mode
15 Baud Rate Select (See section 7.2.)
16 Baud Rate Select
17 Baud Rate Select
20 from computer (not used) DTR
25 Remote Telemetry Control from logger OUT 0
All other pins are not connected and reserved for future use.
Notes
1.
The RTS signal from the computer will activate the logger even between
scans. The logger may respond with a prompt (CR) immediately the RTS
becomes true or wait until the next scan (depending on communication
mode settings).
2.
CTS signal is not used to synchronise communications between the
logger and computer, this is achieved by the logger prompt (CR). The
DSR is true whenever the logger scan is active.
7.2 Baud Rates
The communication baud rate is selected on the COMPUTER connector on
the face of the logger. Note that PC/XT and slow PC/AT computers can only
communicate up to 9600 baud. Fast PC/AT and 386 machines can
communicate at 19200.
UNIDATA
34 COMPUTER COMMUNICATION