Iec 60870-5-101 - Allen-Bradley Rockwell Automation 857 User Manual

7-12
Communications
Communication Protocols
(cont.)
857-UM001A-EN-P – July 2009
Table 7.10 – DPN 3.0 Parameters
Parameter Value
bit/s 4800
9600 (default)
19200
38400
Parity None (default)
Even
Odd
SlvAddr 1 – 65519
MstrAddr 1 – 65519
255=default
LLTout 0 – 65535
LLRetry 1 – 255
1=default
APLTout 0 – 65535
5000=default
CnfMode EvOnly (default)
All
DBISup No (default)
Yes
SyncMode 0 – 65535
Set = An editable parameter (password needed)

IEC 60870-5-101

The IEC 60870-5-101 standard is derived from the IEC 60870-5
protocol standard definition. In Allen-Bradley devices, IEC 60870-5-
101 communication protocol is available via menu selection. The
Allen-Bradley 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 Allen-Bradley devices,
refer to the Profile checklist document.
Unit Description
bps Communication speed
Parity
An unique address for the device
within the system
Address of master
ms Link layer confirmation timeout
Link layer retry count
ms Application layer confirmation
timeout
Application layer confirmation
mode
Double-bit input support
s Clock synchronization request
interval.
0 = only at boot
Set
Set
Set
Set
Set
Set
Set
Set
Set
Set
Set