Rockwell Automation 1752-L24BBBE SmartGuard 600 Controllers User Manual - Manual (Page 222)

222 Rockwell Automation Publication 1752-UM001E-EN-P - June 2014
Appendix D Function Blocks Command Reference
Enable turns off if the inputs become inactive or if an error is detected for the
function block.
The Discrepancy Error output can be used when programming the ESTOP
function block. To display this optional output, check the Discrepancy Error
checkbox on the Out point tab of the Function Block Properties dialog box in the
Logic Editor of RSNetWorx for DeviceNet software.
A Fault Present output can also be used in programming. To enable this optional
output, check the Fault Present checkbox on the Out point tab of the Function
Block Properties dialog box.
ESTOP Function Block Parameters
Set these parameters for the ESTOP function block.
ESTOP Function Block Truth Tables
In the truth table, 0 is off and 1 is on.
IMPORTANT A manual reset function is required for emergency stop applications. When
using the Emergency Stop push button function block, you must also use the
Reset function block.
Table 10 - ESTOP Function Block Parameters
Parameter Valid Range Default Setting
Input Type Single Channel,
Dual Channel Equivalent
Dual Channel Complementary Dual Channel Equivalent
Discrepancy Time 0…30 s in 10 ms increments. (1)
The discrepancy time must be equal to or greater than
the cycle time of the controller.
(1) A discrepancy time check is not performed when the discrepancy time is set to 0.
30 ms
Table 11 - Truth Table for ESTOP Function Block
Single Channel Dual Channel Equivalent Dual Channel Complementary
Input 1
(NC)
Output
Enable
Input 1
(NC)
Input 2
(NC)
Output
Enable
Input 1
(NC)
Input 2
(NO)
Output
Enable
0 0 0 0 0 0 0 0
1 1 0 1 0 0 1 0
-- -- 1 0 0 1 0 1
-- -- 1 1 1 1 1 0