71
Safety Device Function Blocks Section 3-5
Truth Table Truth Table for Two-hand Control
0: OFF, 1: ON
Error Handling and Error Resetting
Note The Output Enable signal will not turn ON if the synchronization time require-
ment is not satisfied (i.e., operation inputs for both hands must be completed
within 500 ms), but this is not considered an error.
Input 1
(Pair 1-NO)
Input 2
(Pair 1-NC)
Input 3
(Pair 2-NO)
Input 4
(Pair 2-NC)
Output
Enable
0000
0
00010
00100
00110
01000
01010
01100
01110
1000
0
10010
10101
1011
0
11000
11010
11100
11110
Error
condition
Behavior for error detection Resetting the error
condition
Output
Enable
Fault
Present
Error output
Discrepancy
Error at Pair 1
OFF
(safety state)
ON
Discrepancy Error Pair 1:
ON
Remove the cause of
the error and then do
the following:
1. Make the both input
pair 1 and pair 2 inac-
tive and then active
again.
2. Or change the
G9SP-series Con-
troller's operating
mode to IDLE Mode
and then back to
RUN Mode.
Discrepancy
Error at Pair 2
Discrepancy Error Pair 2:
ON