Download ME381 and MT381 User manual

ME381 and MT381
Response Time
Response time defines the minimum time between the reception of a request (end of request
telegram) and the transmission of the response (begin of response telegram). These two options are
available:
• (0) – 20 ms,
• (1) – 200 ms.
Device Address
Device address is intended to identify a meter in the group of meters. Each meter in one group must
therefore have a unique number. Eight digits (1 to 9) should be used.
Passwords
There is a password for communication channels:
• settings password (used in IEC 1107 where entrance password needs to match this password
and one of four authentication keys); eight digits (1 to 9) should be used,
5.5.1.4. IEC HDLC setup
COSEM object includes several attributes, described as follows.
Communication Speed
Selection can be made between these rates:
• (0) - 300 baud,
• (1) - 600 baud,
• (2) - 1200 baud,
• (3) - 2400 baud,
• (4) - 4800 baud,
• (5) - 9600 baud,
• (6) - 19200 baud,
• (7) - 38400 baud,
• (8) - 57600 baud,
• (9) - 115200 baud.
Window Size Transmit
Attribute defines the maximum number of frames that a device or system can transmit before it needs
to receive an acknowledgement from a corresponding station. During logon, other values can be
negotiated.
Window Size Receive
Attribute defines the maximum number of frames that a device or system can receive before it needs
to transmit an acknowledgement to the corresponding station.
Maximum Info Length Transmit
Attribute defines the maximum information field length that a device can transmit.
Maximum Info Length Receive
Attribute defines the maximum information field length that a device can receive.
Inter Octet Time Out
Attribute defines the time, expressed in milliseconds, over which, when any character is received from
the primary station, the device will treat the already received data as a complete frame.
Mx381_User_manual_eng_V1.00.doc 89