5 USER GUIDE
5-120
The contents of the above window are explained below:
On-screen item
Description
Token maintenance node number
This is the node number of the node that currently
holds the token.
Minimum frame interval
This value denotes the minimum frame interval that is
allowed on the network.
It represents the maximum value of the nodes that
compose the network.
Refresh cycle time
This value is 1.2 times the time required for a token
circulation through the network.
Refresh cycle measurement time (current)
Refresh cycle measurement time (maximum)
Refresh cycle measurement time (minimum)
These values are the current value, maximum value,
or minimum value of the measured time required for a
token circulation through the network.
5.4.7 FL.NET module communication performance
(1) For FL-net protocol version Ver. 1.00 (Model: LQE500)
The method of calculating the communication performance of the FL-NET module is shown
below. However, the method varies depending on the destination of the connection and
number of words. Accordingly, the worst case scenario is shown below on the supposition of
communication performance between FL-NET modules.
The meanings of symbols used in the expression are shown below.
S: Number of transmitted words of the self-node (words)
R: Number of received words sent from the previous node to the self-node (words)
F: Quotient resulting from dividing (S - 1) by 512
(Example: F = 0 when S = 512, F = 1 when S = 513)
Fn: F of each node. n is the node number.
RCT: Refresh cycle time (ms)
SCT: Sequence cycle time (ms)
MS: Transmitted message word count (bytes)
MR: Received message word count (bytes)
MFT: Minimum frame interval (ms)
W: Total number of transmitted words of all nodes (words)
n: Number of connected nodes
Summary of Contents for FL.NET
Page 1: ......
Page 2: ......
Page 29: ...1 OVERVIEW ...
Page 33: ...2 FL NET MODULE ...
Page 42: ...3 FL NET MODULE INSTALLATION ...
Page 46: ...4 FL NET MODULE WIRING PROCEDURES ...
Page 53: ...5 USER GUIDE ...
Page 203: ...5 USER GUIDE 5 151 Sample printout ...
Page 206: ...6 MAINTENANCE ...
Page 210: ...7 TROUBLESHOOTING ...
Page 225: ...8 APPENDIXES ...