130
6 SPECIFICATIONS
6.2 Function List
6.2
Function List
The following table lists the functions of the I/O module with diagnostic functions in SIL2 mode.
The following functions are not available for the I/O module with diagnostic functions in SIL2 mode.
• Online module change function
• Inter-module synchronization function
Item
Description
Reference
Safety input function
Input double wiring function
Turns input wiring into double wiring.
Page 160 Input double
wiring function
Input response time setting
function
Reduces nose in input signals.
Page 162 Input
response time setting
function
Input HOLD function
Holds input values when safety refresh data reception is
interrupted.
External input monitor
function
With External input monitor signal (Un\G1024, Un\G1028), the
ON/OFF state of an external input terminal can be checked on a
per-point basis.
Page 164 External input
monitor function
Safety output function
Output double wiring function
Turns output wiring into double wiring.
Page 165 Output double
wiring function
Output HOLD function
Holds output values when safety refresh data reception is
interrupted.
Input diagnostic function
Double input discrepancy
detection function
Identifies failures by monitoring the discrepancy state of doubled
input signals.
Page 168 Double input
discrepancy detection
function
Input dark test function
Outputs test pulses to turn off the inputs that are on and diagnoses
contacts including external devices for failure.
Page 175 Input dark test
function
Output diagnostic function
Output dark test function
Outputs test pulses to turn off the outputs that are on and
diagnoses contacts including external devices for failure.
Page 177 Output dark
test function
Output read-back function
Reads back the output results for diagnosis to see if the output
signals are output correctly.
Page 179 Output read-
back function
Protection function
Prevents trouble such as an overvoltage and overcurrent from
affecting other modules in the system.
Common function of the I/O
module with diagnostic
functions
LED indication setting on
error condition
This function helps set the indication of the I/O status indicator
LED when a minor error occurs.
The error occurrence status of each I/O terminal can be displayed
in the corresponding I/O status indicator LED.
Page 181 LED indication
setting on error condition
Error history function
For the errors that occurred in the I/O module with diagnostic
functions, a maximum of 16 error histories can be checked using
the engineering tool.
Page 182 Error History
Function
Event history function
Collects errors that occurred in the I/O module with diagnostic
functions and executed operations as event information in the
remote head module.
Summary of Contents for MELSEC iQ-RX40NC6B
Page 1: ...MELSEC iQ R I O Module With Diagnostic Functions User s Manual Application RX40NC6B RY40PT5B ...
Page 2: ......
Page 125: ...4 OVERVIEW 123 4 MEMO ...
Page 191: ...12 MAINTENANCE AND INSPECTION 189 12 MEMO ...
Page 227: ......
