Setra System Model Datum 2000 - Manual (Page 23)

23
SETRA DATUM 2000™ RS232 SERIAL OPTION INTERFACE
INSTRUCTIONS
The serial option for the Setra DATUM 2000™ has a 9 pin d-sub connector
for connecting the serial interface.
The following pinout is used by the Serial Option:
1 2 3 4 5 Pin Description
0 0 0 0 0 2 Transmit (from DATUM)
0 0 0 0 3 Receive (into DATUM)
6 7 8 9 5 Signal Ground
The DATUM 2000™ Serial option operates with the following default param-
eters:
Baud 2400
Parity None
Start bits 1
Data bits 8
Stop bits 1
The DATUM 2000™ does not support hardware or software handshaking,
e.g. RTS, CTS, DTR, and DSR are not supported, nor is XON/XOFF hand-
shaking supported. Some computer equipment expects handshaking; for
instance, it may be necessary to jumper RTS to CTS at your computer's
serial input port, it may also be necessary to jumper DTR to DSR.
Shielded cables must be used with this unit to ensure compliance with
the Class A, Part 15 FCC limits.
DATUM 2000™ SERIAL OPTION COMMANDS
A 41H Transmit every reading that is displayed by the meter with an
alarm condition indicated. Note: If the DATUM 2000™ is
locked onto a channel, the other channel will not print even if
it is in an alarm condition. See page 11 for setting the alarm
points.
C 43H Transmit the readings displayed on the DATUM 2000™
continuously. Note this will transmit the active channel(s); if
the DATUM 2000™ is locked onto a channel, only that
channel will be transmitted. Hint: use command 1 or 2 to
lock onto a channel and then use C to print it continuously.
1 31H Set the DATUM 2000™ to channel one and lock the meter
so only channel one is displayed. It then transmits one
reading for channel one. Channel one must be calibrated.