beautypg.com

ProSoft Technology MVI69-FLN User Manual

Page 96

background image

MVI69-FLN ♦ CompactLogix Platform

Reference

FA Control Network Communication Module

Page 96 of 137

ProSoft Technology, Inc.

November 3, 2008

Timer Types

Message Description

Token monitoring time

Set from the upper layer (in units of 1 ms).

Allowable refresh cycle time

Calculated from the refresh time only for cyclic transmission.

Refresh cycle measurement time Measurement value in a circulation of a token: Present value.

The maximum value and the minimum value from the start time
are held. (in units of 1 ms).

Allowable minimum frame
interval time

Set from the upper layer. The maximum value on the network is
effective. (in units of 100 microseconds).

Joining token detection time

Fixed value (3 seconds)

Participation request frame
transmission waiting time

Fixed value (self-node number

× 4 ms)

Three-circulation waiting time

Fixed value (3 seconds)

Token holding timeout time

Within this time after receipt of a token directed to the self-node,
a token must be transmitted to the next node.

Trigger frame transmission
waiting time

Fixed value ((self-node number mod 8)

× 4 ms)

3.3.2 Lower Layer Protocol

Address Setting

IP address

The IP address is set from the upper layer of the FA link protocol.

The sub-network mask is also set from the upper layer of the FA link protocol.

The default value of the transmission source is specified as 192.168.250.N (N =
node No.: 1 to 125).