Mitsubishi Electric MELSEC iQ-R Series Safety Manual page 34

Connecting safety components
Connect safety components according to the following safety level by dual wiring and single wiring.
Double wiring
Single wiring
Use the doubling input signal to the CC-Link IE Field Network remote I/O module (with safety functions) with
the following combinations of input terminals. For combinations other than the following, an error is detected
by doubling input discrepancy detection.
{X0, X1}, {X2, X3}, {X4, X5}, {X6, X7}, {X8, X9}, {XA, XB}, {XC, XD}, {XE, XF}, {X10, X11}, {X12, X13}, {X14,
X15}, {X16, X17}, {X18, X19}, {X1A, X1B}, {X1C, X1D}, {X1E, X1F}
To execute the input dark test, connect the safety components using a test pulse terminal.
To execute the input dark test function, use the input terminals and test pulse terminals of the CC-Link IE Field
Network remote I/O module (with safety functions) with the following combinations. Connecting to the
incorrect test pulse terminal is identified as a disconnection and causes an error.
[Correct combination]
{X0, X2, X4, X6, X8, XA, XC, XE} and T0
{X1, X3, X5, X7, X9, XB, XD, XF} and T1
{X10, X12, X14, X16, X18, X1A, X1C, X1E} and T2
{X11, X13, X15, X17, X19, X1B, X1D, X1F} and T3
When not performing input dark test, the COM+ terminal can be used.
Use the dual wiring for the CC-Link IE Field Network remote I/O module (with safety functions) with the
following combinations of output terminals.
{Y0, Y1}, {Y2, Y3}, {Y4, Y5}, {Y6, Y7}
For specific wiring and setting methods, refer to Page 51 SAFETY APPLICATION CONFIGURATION EXAMPLES.
For details on dual wiring, single wiring, and input dark test, refer to the following.
 CC-Link IE Field Network Remote I/O Module (With Safety Functions) User's Manual
4 PRECAUTIONS FOR USE OF SAFETY PROGRAMMABLE CONTROLLER
32
4.1 Precautions for Designing Safety Application
Double wiring
Safety
programmable
Single wiring
controller
Safety relay
Safety relay