5-2
95582717
OPERATION AND APPLICATION
KT19 II
20/06/19e
HEITRONICS Infrarot Messtechnik GmbH
5.1.2.
Control of communication
Data transfer from evaluation to the Infrared Radiation Thermometer KT19 II
The ready-to-receive state of the Infrared Radiation Thermometer KT19 II is signalized via line RTS. The
coding shown in the following table shall apply:
Function
RTS state
ready-to-receive
on (high)
evaluation of a command
off (low)
receive buffer overflow
off (low)
If the state of RTS is OFF, sent data are lost.
Data transfer from Infrared Radiation Thermometer KT19 II for evaluation purposes
Before the Infrared Radiation Thermometer KT19 II sends a message, the CTS input is checked. If the
state of CTS is ON (high), the whole message including the selected delimiter is sent.
●
Commands
The individual commands are transmitted as a text in ASCII characters. As for instruction characters, only
the first three characters will be checked, numerical values are accepted with or without fractional parts,
blanks must not be filled in between operational sign and numerical value.
An answer is only given in case of interrogation (?). If a command cannot be read, an error message will be
output. If parameters are not found to be within the permissible range of values (e.g. left-hand end of extent
< right-hand end of extent), the command will not be executed and an error message will be output.
●
Delimiter
Infrared Radiation Thermometer KT19 II identifies the ASCII control characters carriage return (0D) and line
feed (0A) as end of instruction. As soon as the end of instruction has been recognized, KT19 II will reset
the ready-to-receive state (RTS) until the command is evaluated. The answer of the Infrared Radiation
Thermometer KT19 II is (0D).
●
Input buffer
Infrared Radiation Thermometer KT19 II has an input buffer of 40
characters. If a longer command is re-
ceived, KT19 II issues an error message.
5.1.3.
Description of commands
The commands for programming the parameters as well as error messages are described in a separate
instruction:
Universal Protocol
Communication via Serial Interface
for all digital HEITRONICS Infrared Radiation Thermometer
5.2.
Operation and configuration via keypad
In order to take advantage of the capacity of the Infrared Radiation Thermometer KT19 II even without any
programming skills, manuals and time-consuming training, interactive operator guidance has been provid-
ed.
There is a graphic display at the back of the device.
