Thermo Scientific SHKE8000 Series Maintenance Manual page 21

Section 1
Installation
RS-232 Interface
Connector (cont.)
1-12 Model SHKE8000 Series Shakers
The data transfer sequence is transmitted in the following format. X refers
to the numerical time, RPM and temperature.
(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 Model SHKE8000/SHKE8000-ICE and SHKE8000-7/SHKE8000-
8CE transmit time, RPM and temperature information one minute after
power is first applied to the unit and 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 and RPM data upon receiving
"DC1" (XON) and will restart 60 minute interval transmissions unless
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.
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