Function List - Mitsubishi Electric R60AD8-G User Manual

6.2

Function List

The function list of the R60AD8-G in SIL2 mode is as follows.
Item
Range switching function
A/D conversion enable/disable setting function
A/D conversion Sampling processing
method
Averaging
processing
Scaling function
Digital clipping function
SIL2 A/D Double input discrepancy
conversion detection function
function
A/D conversion circuit diagnostic
function
Input HOLD function
Self-diagnostic function
Error history function
Event history function
The following function is not available for the R60AD8-G in SIL2 mode.
• Online module change function
Description
This function allows the input range of analog input to be switched for each
channel. Switching the range makes it possible to change the I/O
conversion characteristics.
This function controls whether to enable or disable the A/D conversion for
each channel. Disabling the A/D conversion for unused channels reduces
the conversion cycles.
This function converts analog input values to digital operation values at
every sampling period.
Count average The A/D converter module executes the A/D conversion for a set number of
times, and performs the averaging processing on the total value excluding
the maximum and the minimum values. The time to complete averaging
processing with a set number of times depends on the number of channels
where the A/D conversion is enabled.
Moving The A/D converter module averages digital operation values taken at every
average sampling period for a specified number of times.
This function performs the scale conversion on digital operation values. The
values are converted within a specified range between a scaling upper limit
value and scaling lower limit value. This function helps reduce the time
taken for creating a scale conversion program.
This function fixes the digital operation value with the maximum digital
output value and the minimum digital output value when the corresponding
current or voltage exceeds the input range.
An error is detected by mutually referencing digital operation values of two
R60AD8-G modules.
The R60DA8-G for diagnostics regularly inputs an analog value to the
R60AD8-G set to SIL2 mode to internally diagnose the A/D conversion
circuit of the R60AD8-G.
This function holds the digital operation value for the specified time after
safety refresh data receiving has an interrupt.
This function periodically monitors the operating status of the R60AD8-G,
such as the MPU (operation processing unit) operating status, power supply
voltage status (overvoltage and undervoltage), safety communications
status, and built-in programs operating status, for any errors.
A maximum of 16 errors of the R60AD8-G error history can be checked with
the engineering tool.
This function collects errors and operations in the R60AD8-G as event
information in the remote head module.
Reference
Page 265 Range
Switching Function
Page 266 A/D
Conversion Enable/
Disable Setting Function
Page 266 Sampling
processing
Page 267 Count
average
Page 268 Moving
average
Page 269 Scaling
Function
Page 272 Digital
Clipping Function
Page 281 Double input
discrepancy detection
function
Page 286 A/D
conversion circuit
diagnostic function
Page 289 Input HOLD
function
Page 290 Self-
diagnostic Function
Page 291 Error History
Function
Page 292 Event History
Function
6 SPECIFICATIONS
227
6.2 Function List
6