RayTek MI Miniature Infrared Sensor - Manual (Page 75)

Programming Guide
MI 67
11.1 Transfer Modes
The unit’s serial interface is either RS232 or RS485, depending on the
model.
Settings:
transfer rate: 9.6 kBaud, 8 data bits, 1 stop bit, no
parity, flow control: none (half duplex mode).
There are two possible transfer modes for the serial interface:
Poll Mode: By user interface control, a parameter will be set or
requested.
Burst Mode: A pre‐defined data string (“burst string“) will be
transferred as fast as possible as long as the burst mode
is activated. The data will be transferred in one
direction only, from the unit to the user interface.
V=P
“P“ starts the Poll mode (allows to request or to set
parameters)
V=B “B“ starts the Burst mode (data will be transferred as
fast as possible; necessary: data string definition –
“Burst string“)
$=UTIE “$“ sets the parameter combination (“burst string“)
“U“ unit (°C or °F)
“T“ temperature value
“I“ internal temperature of the sensing head
“E“ emissivity
?X$ gives the burst string parameters while in poll mode
Return from the burst mode to the poll mode:
If the poll mode shall be activated while the burst mode is still active,
send a character and within the following 3 seconds the command
V=P.