Programmable Safety Controller SCR P
84
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Two-Hand Control Block
Default Nodes
Additional Nodes
Notes
TC
(up to 4 TC
nodes)
IN
MP1
ME
Two-Hand Control inputs must connect either directly to a Two-Hand Control Block or indirectly through a
Bypass Block connected to a Two-Hand Control Block. It is not possible to use a Two-Hand Control input
without a Two-Hand Control Block.
Use the IN node to connect input devices that must be on before the THC can turn the outputs on.
Two-Hand Control
Function Block
M0:TC1
M0:OS1
M0:RO1
Either the TC1 input or the OS1 input has turn Off authority.
OS1 needs to be in the Run state before TC1 can turn the output of T1 & RO1 On.
Figure 65: Timing Diagram
—Two-Hand Control Block
Two-Hand Control &
Bypass Function Blocks
M0:TC1
M0:BP1
M0:TC2
M0:OS1
M0:RO1
The Two-Hand Control actuators TC2 and the Bypass Switch BP1 need to be in the Run state and
need to be the last devices in time to transition to the Run state for the TC1 function block to turn
On.
Figure 66: Timing Diagram
—Two-Hand Control Block and Bypass Blocks