14
4.7.11. Inactivity Timeout
With these parameters an inactivity time can be set. If the set time expires without an
activity on the serial line, the connection is dropped.
4.7.12. Pack Control
(Version 2.80 and above) Alternative pack algorithm settings are controlled here. Set this
value to 00 if specific functions are not needed. The functions of these bits are defined in
the following table:
Function
7
6
5
4
3
2
1
0
Idle time to force transmit: 12ms (avg.)
0
0
Idle time to force transmit: 52ms (avg.)
0
1
Idle time to force transmit: 250ms (avg.)
1
0
Idle time to force transmit: 5 secs (!)
1
1
No trailing chars after sendchar(s)
0
0
One trailing char after sendchar(s)
0
1
Two trailing chars after sendchar(s)
1
0
Sendchars define 2-Byte sequence
1
Send immediate after Sendchar
1
“Idle time to force transmit” defines the time period after which all accumulated
characters are sent, regardless of the recognition of send characters. In some applications,
CRC, Checksum or other trailers follow the end of sequence character. In these cases,
this option helps to adapt frame transmission to the frame boundary. If Bit 4 is set, EAD
02 interprets the Sendchars as a 2-byte sequence, if reset, they will be interpreted
independently.
If Bit 5 is not set, any other characters already in the serial buffer will be included in the
transmission after a “transmit” condition is found. If the bit is set, the EAD 02 will
immediately send after recognizing the transmit condition (sendchar or timeout)
NOT
E:
A transmission might occur if status information has to be exchanged or an
acknowledgement has to be sent.
4.7.13. Send Characters
Up to two characters can be entered in hexadecimal representation in the parameters
“sendchar.” If a character received on the serial line matches one of these characters, it is
immediately sent, together with any waiting characters to the TCP connection. This is
especially useful to minimize the response time for specific protocol characters on the
