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Section 1
Installation and Start-Up
RS-232 Interface
Connector (cont.)
1-10
Orbital Shakers
Figure 1-13. RS-232 and Remote Alarm Connectors
The data transfer sequence is transmitted in the following format. X refers
to the numerical temperature (if the temperature option is installed) or
RPM.
(NUL)XX.XX(H)(SP)(SP)XXXRPM(SP)(SP)XX.XC(SP)(LF)(CR)(EOT)
NUL . . . . . . . . . . . . . . . . . . . . .Null character (0)
SP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Space
LF
. . . . . . . . . . . . . . . . . . . . . . . . . . . .Line feed
CR
. . . . . . . . . . . . . . . . . . . . . . . .Carriage return
EOT
. . . . . . . . . . . . . . . . . . . . . . .End of text (4)
H . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Hold Mode
The MaxQ Shaker transmits time, temperature (if temperature option is
installed*) and RPM data one minute after power is first applied, then
every 60 minutes.
The shaker's microprocessor responds to two ASCII commands from the
remote:DC1 (XON), and DC3 (XOFF).
DC1 (17, 11 Hexadecimal)
The shaker will transmit time, temperature (if the temperature option is
installed*) and RPM data upon receiving "DC1" (XON) and will restart
60 minute interval transmissions if they had been inhibited by a "DC3"
(XOFF).
DC3 (19, 13 Hexadecimal)
Receiving a "DC3" (XOFF) from the remote inhibits the shaker from
sending serial data indefinitely until a "DC1" (XON) is received.
* Factory-installed temperature monitor, Part No. 194044
Thermo Scientific
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