ProSoft Technology MVI69-101S - Manual (Page 92)

MVI69-101S ♦ CompactLogix or MicroLogix Platform Reference
IEC 60870-5-101 Slave Communication Module
Page 92 of 149 ProSoft Technology, Inc.
March 16, 2009
The MVI69-101S module works as a IEC-60870-5-101 slave. It can send monitor
data, receive commands or generate events to the master unit, as explained in
the following topics.
5.3.1 General Parameter Configuration
Communication Parameters
The following parameters should be configured for serial communication:
Baud Rate : 9600 #Baud rate for port 110-38400
Parity : 2 #0=None, 1=Odd, 2=Even
RTS On : 0 #0-65536 mSec before message
RTS Off : 0 #0-65536 mSec after message
Minimum Delay : 20 #Minimum # of mSec before response sent
Receive Timeout : 2000 #Maximum mSec from first char to last to wait
Hardware Handshaking: 0 #Hardware handshaking 0=None, 1=RTS/CTS, 2=DTR/DSR,
#3=modem
Adjust these parameters for your application.
Data Link Configuration
The protocol specification document IEC 60870-5-2 specifies an unambiguous
address (number) for each link. Each address may be unique within a specific
system, or may be unique within a group of links sharing a common channel. The
protocol specification defines that the Data Link Address may have 0, 1 or 2
octets. The first option should be used only during Balanced Mode.
Configure the following parameter to set the number of octets to be used for the
Data Link Address value. It is essential that the master unit also uses the same
number of octets configured for the MVI69-101S.
Data link address length : 2 #0, 1, or 2 octets used for DL address
You must also configure the actual Data Link Address value using the following
parameter:
Data link address : 1 #Range depends on the configured DL
#Length
This value identifies the module's address in the network.
ASDU Configuration
The protocol specification document IEC 60870-5-3 describes the Basic
Application Data Units that are used in the protocol. It also defines the
Application Service Data Unit (ASDU) used by the protocol for data
communication.
You can configure the number of bytes to be used for the following ASDU
components:
Component Abbreviation Possible Number of Octets
Cause of Transmission COT 1 or 2
Common Address of ASDU CASDU 1 or 2
Information Object Address IOA 1, 2 or 3