Metrix MX 554 Notice De Fonctionnement page 45

Chapter II
5.4.1.3. Request dialogue
PC
Instruction
Answer 1
5.4.1.4. Breaking the link
If the PC sends the ASCII ESC (1BH) code, the repetitive measurements sent by the
multimeter will be interrupted, even if it is sent during one of the measurements.
5.4.2. Message contents
In the following, characters expressed in ASCII are shown between double quotes and
hexadecimal values are terminated by an H.
Messages from the PC consist of a sequence of codes, representing ASCII characters and
a carriage return (ODH) acting as a terminator.
1st caract.
First character
First character = "2" (32H)
Initializes the DMM configuration (command message)
First character = "3" (33H)
Initializes a measurement or check requests (request message)
Benchtop multimeter
DMM
ENQ
ACK
2nd caract. 3rd caract.
this is a "foreword" which defines the message type
Meaning
PC: "Give me some data?"
DMM : "It is...!"
...................... Terminator
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