WIKA operating instructions, model CTH7000
EN
49
08/2020 EN/BG
11. Communications Interface
11. Communications interface
11.1 Introdction
The CTH7000 is fitted with USB communication interface as standard. The connected
PC must have the correct USB driver installed. Please refer to the installation CD and the
ULOG help system.
The USB PC interface will be installed as a virtual COM driver. The communication
protocol is.
Bits per second
9600
Data bits
8
Stop bits
1
Parity
none
Flow control
none
An interval of 1 ms to 2 ms should be allowed between transmitted characters.
11.2 USB Command syntax
The programming command language is based on the SCPI command format.
Commands are case insensitive.
Commands consist of one or more command words with each command word separated
by a colon (:) or a question mark (?). For commands requiring a response, a white space
character is used to separate the command parameter from the command words (e.g.
UNIT:TEMP <units>).
A response to a command returns a list of parameters (<parameter>) with each
parameter separated by a comma (,). The last parameter will be followed by a command
terminator carriage return (CR).
:
(colon)
Separates command words
?
(question mark)
Command requires a response
,
(comma)
Separates parameters list
Unrecognized commands will return ERR CMD after the CR character.
