User Manual

Rockwell Automation Publication 1752-UM001E-EN-P - June 2014 227
Function Blocks Command Reference Appendix D
Safety Gate Monitoring Function Block Parameters
Set these parameters for the Safety Gate Monitoring function block.
Safety Gate Monitoring Function Block Truth Tables
In the truth tables, 0 is off and 1 is on.
Table 16 - Safety Gate Monitoring Function Block Parameters
Parameters Range Default
Input Type Single Channel
Dual Channel Equivalent (1 pair)
Dual Channel Complementary (1 pair)
Two Dual Channel Equivalent (2 pairs)
Two Dual Channel Complementary (2 pairs)
Dual Channel
Equivalent
Function Test No Function Test/Function Test Required No Function Test
Discrepancy Time
Pair 1
0
…30 s in 10 ms increments
A discrepancy time check is not performed if 0 is set.
30 ms
Discrepancy Time
Pair 2
Synchronization Time 0…30 s in 10 ms increments
A synchronization time check is not performed if 0 is set.
300 ms
Table 17 - Truth Table for Single Channel and Dual Channel (1 Pair) Safety Gate Monitoring
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
(NC)
Output
Enable
0 00000 0 0
1 10100 1 0
--
-- 1 0 01 0 1
--
-- 1 1 11 1 0
Table 18 - Truth Table for Dual Channel (2 Pairs) Safety Gate Monitoring Function Block
Dual Channel Equivalent (2 Pairs) Dual Channel Complementary (2 Pairs)
Input 1
(NC)
Input 2
(NC)
Input 3
(NC)
Input 4
(NC)
Output
Enable
Input 1
(NC)
Input 2
(NC)
Input 3
(NC)
Input 4
(NC)
Output
Enable
0000
000000
0001
000010
0010
000100
0011
000110
0100001000
0101
001010
0110
001100
0111
001110
1000
010000