6.2 Communication protocols
6 Communication
Technical description
134
VAMP 24h support phone +358 (0)20 753 3264
VM55.EN005
6.2.7.
IEC 60870-5-101
The IEC 60870-5-101 standard is derived from the IEC 60870-5
protocol standard definition. In Vamp devices, IEC 60870-5-101
communication protocol is available via menu selection. The
Vamp unit works as a controlled outstation (slave) unit in
unbalanced mode.
Supported application functions include process data
transmission, event transmission, command transmission,
general interrogation, clock synchronization, transmission of
integrated totals, and acquisition of transmission delay.
For more information on IEC 60870-5-101 in Vamp devices
refer to the “IEC 101 Profile checklist & datalist” document.
Parameters
Parameter
Value
Unit Description
Note
bit/s
1200
2400
4800
9600
bps
Bitrate used for serial
communication.
Set
Parity
None
Even
Odd
Parity used for serial
communication
Set
LLAddr
1 – 65534
Link layer address
Set
LLAddrSize
1 – 2
bytes
Size of Link layer address
Set
ALAddr
1 – 65534
ASDU address
Set
ALAddrSize
1
2
Bytes Size of ASDU address
Set
IOAddrSize
2 – 3
Bytes Information object
address size. (3-octet
addresses are created
from 2-octet addresses by
adding MSB with value
0.)
Set
COTsize
1
Bytes Cause of transmission
size
TTFormat
Short
Full
The parameter
determines time tag
format: 3-octet time tag
or 7-octet time tag.
Set
MeasFormat Scaled
Normalized
The parameter
determines measurement
data format: normalized
value or scaled value.
Set
DbandEna
No
Yes
Dead-band calculation
enable flag
Set
DbandCy
100 – 10000
ms
Dead-band calculation
interval
Set
Set = An editable parameter (password needed)
