Data Communication; Layout Of Commands; Listing Of Commands - Hameg HM8112-3 Manual

L i s t i n g o f c o m m a n d s

Data communication

Layout of commands

A command consists of 5 ASCII characters:
1. Character: 0
2. Character: Command category (0, 1, 2 or E)
3. Character: Function between 0 and F
4. Character: Parameter between 0 and F
5. Character: Terminator, either CR or LF
– all commands end with CR or LF
– the character set includes figures 0 – 9, characters A – F
and CR, LF
– the characters can be entered as upper case or lower case
letters
– Figures 2, 3 and 4 received after 0 are interpreted as a
control command. After a command has been transmitted
a delay of at least 35 ms must be observed, then the next
command can be sent.
– A transmission of invalid commands is answered with
2D0LF in case of wrong length of the command or void 2D0LF 2D0LF
2D0LF 2D0LF
command category, with 2D1LF
for group 2 and with 2DELF 2DELF 2DELF 2DELF for group E. This helps
2DELF
debugging the controller program. The error message is
transmitted immediately after occurrence.
Notes concerning some commands:
0000...0004 Measurement of DC voltage, ranges 100 mV to
600 V
0010...0014 True RMS with DC
0016...0019 True RMS without DC
02C3...02C5 This message is sent after a change of function
or range
02F0...02F3 Request of the instrument's data
By pressing button „LOCAL" the instrument
HINT
returns to manual mode.
48
Subject to change without notice
2D1LF for group 1, with 2D2LF 2D1LF 2D1LF 2D2LF 2D2LF 2D2LF
2D1LF 2D2LF