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2.3
Retrieval of messages (spontaneous event buffer)
The section „Fault displays" contains a table with all event types supported,
including the corresponding explanations. Events and alarms can only be
cleared on site. It is not possible to acknowledge errors.
After switching from one protocol to another the complete spontane-
ous event buffer will be transmitted from start.! (up to firmware ver-
sion 1.03.08)
2.4
Compatibility list
The following section lists all parameter selections and functions supported
by the DLX that are defined in the user standard DIN EN 60870-5-102 (in-
ternational standard IEC 60870-5-102) from September 1997. The imple-
mentation in the DLX however does not include the full functionality but
only a subset.
Note:
Empty fields (boxes) are for your choices, you need to make your own se-
lections in these fields.
•
Physical Layer
2.4.1
Network configuration
2.4.2
Transmission speed (control and monitoring direction)
Asymmetric interface V.24/V.28 Stand-
ard
•
Link Layer
Only telegrams according to FT 1.2 (IEC 60870-5-1) are permitted:
• Telegram with variable length (68
• Telegram with fixed length (10
• Single characters (E5
Telegram with variable length:
Point-to-point connection
Point-to-point dial-up connection
Multiple drop line configuration (DLX with RS485 module)
300 bit/s
600 bit/s
1200 bit/s
Hex
Start 68
Hex
Length field L
Length field L
Start 68
Hex
Control field C
Address field A
Address field A
Data
Check sum
End 16
Hex
Asymmetric interface V.24/V.28 recom-
mended for more than 1200 bit/s
2400 bit/s
4800 bit/s
9600 bit/s
... 16
)
Hex
Hex
... 16
)
Hex
Hex
)
Telegram with fixed length:
Start 10
Hex
Control field C
Address field A (2 bytes)
Check sum
End 16
Hex
Single character:
E5
Hex
A 37
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