Data link confirm mode, Data link confirm tout, Data link max retry – ProSoft Technology MVI71-DNP User Manual

Page 32: App layer confirm tout, Unsolicited response, Class 1 unsol resp min, Class 2 unsol resp min

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MVI71-DNP ♦ PLC Platform

Installing and Configuring the Module

DNP 3.0 Master/Slave Communication Module

Page 32 of 172

ProSoft Technology, Inc.

August 23, 2007

Data Link Confirm Mode

Data Link Confirm Mode : Never #DL confirm mode (N=Never, S=Sometimes, A=Always)

IED can request acknowledgement from master station when sending data. The
codes are as follows: 0=Never, 1=Sometimes, 2=Always.

Data Link Confirm Tout

Data Link Confirm Tout : 1000 #1-65535 milliseconds DL confirm timeout

Time period to wait for Master Data Link confirmation of last frame sent. This
time is in milliseconds. This parameter is only used if the frame is sent with
confirmation requested.

Data Link Max Retry

Data Link Max Retry : 2 #0-255 maximum DL confirm retry count

Maximum number of retries at the Data Link level to obtain a confirmation. If this
value is set to 0, retries are disabled at the data link level of the protocol. This
parameter is only used if the frame is sent with confirmation requested.

App Layer Confirm Tout

App Layer Confirm Tout : 2000 #1-65535 milliseconds App Layer confirm timeout

Event data contained in the last response may be sent again if not confirmed
within the millisecond time period set. If application layer confirms are used with
data link confirms, ensure that the application layer confirm timeout is set long
enough.

Unsolicited Response

Unsolicited Response : No #Generate Unsolicited responses (Yes or No)

Set if the slave unit will send unsolicited response messages. If set to No, the
slave will not send unsolicited responses. If set to Yes, the slave will send
unsolicited responses. The module will send the event when one of the following
conditions are satisfied:

1

Minimum number of events is reached

2

Delay time is reached

Class 1 Unsol Resp Min

Class 1 Unsol Resp Min : 10 #1-255 min number of events before send

Minimum number of events in Class 1 required before an unsolicited response
will be generated.

Class 2 Unsol Resp Min

Class 2 Unsol Resp Min : 10 #1-255 min number of events before send

Minimum number of events in Class 2 required before an unsolicited response
will be generated.

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