Me GSV-4, Operating Instructions Manual, Page: 38 / 53

return linefeed).
The entire frame has a variable length. The number of frames still to follow is given with “n”.
The number of variable bytes is defined in the fourth and fifth Byte with the data word “len”.
The entire length of the response is (10 + len) bytes.
The command “get_value” is an exception. The response to this command takes place with
a protocol for measured values.
Prefix Code n len No. len bytes Postfix
3B xx B HB LB aa bb cc p1 p2 ... pn 0D 0A
Table 6: Protocol for responding to commands
Example: Releasing commands
Send: 0x26 01 62 65 72 6C 69 6E
Example: Locking commands
Send: 0x26 00 62 65 72 6C 69 6E
Example: Request serial number
Send: 0x23
Send: 0x1F
Receive 0x 3B 1F 01 00 08 30 35 30 30 38 34 34 39 30 35 30 0D 0A
Send 0x24
Result: The serial number is “08449050”.
Example: Change status(Send measured value OFF/ON)
To permanently save the value send stop or start measured value, the command
set_tx_status (0x28<p1>) can be used.
Parameters in HEX Parameters in Bit Current After switching on
00 0 0 0 0 0 0 0 0 Send measured value OFF Send measured value OFF
01 0 0 0 0 0 0 0 1 Send measured value OFF Send measured value ON
02 0 0 0 0 0 0 1 0 Send measured value ON Send measured value OFF
03 0 0 0 0 0 0 1 1 Send measured value ON Send measured value ON
Send: 0x23
Send: 0x29
Receive : 0x 3B 29 01 00 01 30 33 33 01 0D 0A
Result: Current-OFF , After switching on-ON
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