Virtual Reset or Cancel Delay (RCD) Sequence—Feedback Method
RCD Register Bit X
RCD Enable Register
RCD Feedback Register Bit X
RCD Enable Feedback Register
Actuation Code
Actuation Code
RCD success
1
2
3
4
5
Ignore
Logical 0 after power-up or after
other RCD activity has occurred
Logical 1 if this was the last RCD
successfully performed
Figure 22. Virtual Reset or Cancel Delay (RCD) Sequence—Feedback Method
1. Write a logical 1 to the RCD Register Bit(s) corresponding to the desired Virtual Reset or Cancel Delay.
2. At the same time, or any time later, write the Actuation Code to the RCD Enable Register.
3. Monitor the RCD Enable Feedback Register for the Actuation Code to appear (125 ms typical). Then write a
logical 0 to the RCD Register Bit.
4. At the same time, or any time later, clear the Actuation Code (write a logical 0 to the RCD Enable Register).
This step must be completed within 2 seconds of when the code was first written (step 2).
5. If desired, monitor the RCD Feedback Register to know if the desired Reset or Cancel Delay was accepted
(175 ms typical).
Virtual Reset or Cancel Delay (RCD) Sequence—Timed Method
RCD Register Bit X
RCD Enable Register
1 2
3 4
Actuation Code
RCD Feedback Register Bit X
RCD success
5
Ignore
125 ms
(min.)
Figure 23. Virtual Reset or Cancel Delay (RCD) Sequence—Timed Method
1. Write a logical 1 to the RCD Register Bit(s) corresponding to the desired Virtual Reset or Cancel Delay.
2. At the same time, or any time later, write the Actuation Code to the RCD Enable Register.
3. At least 125 ms after step 2, write a logical 0 to the RCD Register Bit.
4. At the same time, or any time later, clear the Actuation Code (write a logical 0 to the RCD Enable Register).
This step must be completed within 2 seconds from when the code was first written (step 2).
5. If desired, monitor the RCD Feedback Register to know if the desired Reset or Cancel Delay was accepted
(175 ms typical).
Virtual Manual Reset Devices are used to create a reset signal for an output or function block configured for a manual reset,
requiring an operator action for the output of that block to turn on. Resets can also be created using physical reset input;
on page 41.
WARNING: Virtual Manual Reset
Any Virtual Manual Reset configured to perform a Manual Power Up function in conjunction with
equipment in several locations on the same network should be avoided unless all hazardous areas can
be verified safe.
Virtual Cancel Off-Delay Devices: provide the option to cancel a configured Off-delay time. It functions in one of the
following ways:
• Keeps the safety output or delay block output On
• Turns the safety output or delay block output Off immediately after the Safety Controller receives a Cancel Off-Delay
signal
XS/SC26-2 and SC10-2 Safety Controllers
www.bannerengineering.com - Tel: + 1 888 373 6767
45
