Amada 1000ADP, Руководство по эксплуатации

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APPENDIX D: COMMUNICATIONS
125ADP/300ADP/1000ADP DUAL PULSE RESISTANCE WELDING POWER SUPPLY
D-2 990-922
Section II. Communications Protocol and Commands
Command Format
Each external command will be formatted as follows:
<stx> <cmd> <cnt> <data> <cksum> <etx>.
Definition of a Command:
<stx> 1 BYTE The data packet will start with a STX (start of text 0x02) character.
<cmd> 2 BYTES This is a two character ASCII string denoting the command.
(i.e. “TY”).
<cnt>
2 BYTES This is a count of data bytes to follow, converted into a decimal
ASCII number. (“00” to “99”).
<data> n BYTES This is ASCII numbers or ASCII data and may or may not be
required by the command. See the individual command.
Multiple byte ordering is: [MSB][…][LSB]
<cksum>
2 BYTES This is a two charter ASCII HEX string calculated from the sum of
all bytes except <stx>, <cksum>, and <etx>.
Then masked with 255 (0xFF).
<etx> 1 BYTE This terminates the transmission. (End of text 0x03).
The ADP will respond with a Negative Acknowledge Command (” NK”) when an error is encountered
in response to a command. The format and reasons follow.
<stx>
”NK” <cnt> <err> <cksum> <etx>.
Where <err> = '1' NO <SOH>. ‘4’ Timeout.
‘2’ BAD checksum. ‘5' In Local.
‘3’ Unrecognized command. ‘6’ Data Bad.
A valid command will return EITHER DATA OR
”AK” .
The <ACK> format is: <stx> “AK” <cnt> <data> <cksum> <etx>.
The
DATA format is: <stx> <cmd> <cnt> <ascii data> <cksum> <etx>.
When you issue a command to the ADP, you need to wait for the response before you issue the next
command. This waiting period should be at least 250 msec. The ADP should respond within this
timeout.
VARIABLE: italics.
RANGE OF PARAMETERS:
low_end - high_end (separated by hyphen).