M20 Communication Protocol - Metrologic M20-EPS User Manual

4.1.3 – M20 Communication protocol
There are several features that can be accessed by the user using the communication
interfaces, USB or RS232. The following special commands allow special data requests
and remote routine activation commanded from computers, PLCs or HMIs. The data
packets use definition [nnd] for decimal numbers, [nnh] for hexadecimal numbers and 'x'
for ASCII characters.
Description:
Request:
Reply:
Description:
Request:
Reply:
Description:
Request:
Reply:
Description:
Request:
Reply:
Description:
Request:
Reply:
Description:
Request:
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Firmware version information request
[01h][F0h]
[20h][bb][cc][dd]
where [bb] indicates the main version (ex. [13d] = 1.3) and [cc][dd]
indicate secondary build number.
Interface test (PING)
[01h][01h]
'O' 'K'
Request all acquired samples (internal data logger)
[03h][setup/product number] (setup/product from [00d] to [99d])
Sequential list (see details at section 5. Data logger5. ).
Clear all acquired samples from flash storage
[04h][00h]
'O' 'K'
Request setup/product change
[05h][setup/product number] (setup/product from [00d] to [99d])
'O' 'K'
Emulate key strokes
[10h][key code]. Where [key code] can be:
[00h] = Key
[01h] = Key
[02h] = Key
[03h] = Key
[04h] = Key
:
[05h] = Key
M20-EPS User Guide