Using One Of The Logging Functions Depending On The Intended Use - Mitsubishi Electric MELSEC iQ-R User Manual

1.13
Using One of the Logging Functions Depending
on the Intended Use
High speed Low speed
As logging functions, the normal logging function, the continuous logging function, and the high speed continuous logging
function are provided.
The normal logging function, continuous logging function, and high speed continuous logging function have different logging
methods of data. Check the features of each logging function and select one of the logging functions depending on the
intended use.
Features of the normal logging function
This function operates in the normal mode (low speed: 20s/CH).
Data can be logged under various conditions with the logging hold processing, level trigger, logging read function, and others.
For the normal logging function, refer to the following.
Page 71 Normal Logging Function
Features of the continuous logging function
This function operates in the simultaneous conversion mode or the inter-module synchronization mode. This function
continuously collects the data to which the A/D conversion has been performed simultaneously in four channels at a high
speed (5s cycles at a maximum). Thus, when the module is connected with a sensor that has input characteristics of the
high-frequency band, this function can collect data for signal analysis.
For the continuous logging function, refer to the following.
Page 95 Continuous Logging Function
Features of the high speed continuous logging function
This function operates in the normal mode (high speed: 1s/CH). The function logs digital operation values at 1s cycle,
which is the shortest cycle, and continuously transfers logging data to the CPU module without stopping logging. Compared to
the continuous logging function, this function is more suitable for measurement since it can obtain analog values that are
changing at high speed.
For the high speed continuous logging function, refer to the following.
Page 111 High Speed Continuous Logging Function
Simultaneous
Synchronization
conversion

1.13 Using One of the Logging Functions Depending on the Intended Use

1
1 FUNCTIONS
67