Panasonic LP-GS Series, Serial Communication Command Manual

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2-5 Communication Check
Verify if the communications between the laser marker and external control device have been established properly in the
following procedure:
Refer to “1-1-3 Settings before external control” (P.14).
If the communication settings are changed, restart the laser marker.
Refer to “1-1-4 Remote mode settings” (P.17).
Start code
STX
Command
“FNO”
Sub command
“S”
Data:
File No.
“2047”
Check sum*1
End code
CR
02 46 4E 4F 53 32 30 34 37 30 35 0D (HEX)
The transmission data above is just a sample. Start code, check sum ON/OFF, and end code content vary depending on
the communication system settings.
*1 : For the command above, calculate the check sum value as follows:
Convert the data from the start code to those before the check sum into the hexadecimal values according to the
ASCII code table and add them all together. Check sum is the value calculated by converting the lower two digits of
the total value into two characters in the ASCII code.
• 02 (HEX) + 46 (HEX) + 4E (HEX) + 4F (HEX) + 53 (HEX) + 32 (HEX) + 30 (HEX) + 34 (HEX) + 37 (HEX) = 205 (HEX)
• 30 35 (HEX) is the value converted the lower two digits character (lower one-byte) 05 (HEX) into two characters in
the ASCII code
When the connection and communication settings are appropriate, the laser marker returns response data.
Example of positive response
Start code
ACK
“00” Check sum End code
06 30 30 36 36 0D (HEX)
Example of negative response
Start code
NAK
“06” Check sum End code
15 30 36 37 42 0D (HEX)
1. Turn ON the power of the external control device
2. Turn ON the key switch of laser marker.
3. Coordinate the communication settings between laser marker and external control device
4. Set the laser marker to the remote mode
5. Change the file number of the laser marker (transmit the FNO command)
6. Check the response from the laser marker
ンㄆㄇㄆㄓㄆㄏ㄄ㄆ
• To use Ethernet, the end code is [CR] fixed. To use RS-232C, select either [CR] or [CR][LF].
• Check sum cannot be added with Ethernet communication.
ME-LP-GS-SR-COMP-3