D13510840D - Interface description
Page 85
ASCII Protocol
LD Protocol
Communication Parameters
Command format
Telegram structure
Master sends
Slave answers
The ELD500 replies
with "unreadable"
characters
Wrong interface parameters
(Baud rate, Data bits, Parity,
Stop bits)
Check if interface parameters (Baud
rate, number of data bits, parity bit
and number of stop bits in the ELD500
and PC / PLC match)
Wrong protocol selected in
the ELD500
Select correct protocol in the ELD500
ELD500 does not
reply / ELD500
replies after several
command with
"E10"
"Carriage Return" at the end
of the command is missing
Finish all commands with "Carriage
Return"
(ASCII 0dhex /
13dez)
ELD500 replies with
"E06"
Control via RS232 not
enabled in the ELD500
Enable control via RS232 (see sub-
menu control location)
ELD500 replies with
error message to
the first command
only, following
commands are
interpreted
correctly
Receiving buffer of the
ELD500 was not empty
before sending the first
command (e.g. by plugging in
the RS232 cable during
operation)
In the ASCII protocol the ELD500 has
not time out function which will empty
the receiving buffer automatically.
Therefore, the buffer should be
emptied before the first command by
sending of ESC, ^C or ^X
Data format
Baudrate
38400, 8 data bits, 1 stop bit, no parity
ENQ LEN
ADR
CmdH
CmdL
DATA (n bytes) CRC
0
1
2
3
4
5
5 + n
STX LEN
StwH
StwL
CmdH
CmdL
DATA (n bytes) CRC
0
1
2
3
4
5
6
6 + n
Error
Possible Reason
Solution
Содержание ELD500 Series
Страница 9: ...D13510840D Contents Page vii...
Страница 10: ...This page has been intentionally left blank D13510840D Contents Page viii...
Страница 12: ...D13510840D Introduction Page 2 This page has been intentionally left blank...
Страница 38: ...D13510840D Page 28 This page has been intentionally left blank...
Страница 58: ...D13510840D SL Sniffer line Page 48 This page has been intentionally left blank...
Страница 64: ...D13510840D Partial flow adaptor Page 54 This page has been intentionally left blank...
Страница 78: ...D13510840D Calibrated leak He 4 6 Page 68 This page has been intentionally left blank...
Страница 84: ...D13510840D Calibrated leak screwed socket Page 74 This page has been intentionally left blank...
Страница 121: ......