Mitsubishi Electric WS0-CPU0 - Safety gate monitoring

Chapter 9
195
Logic programming – Function blocks
9.9.7 Safety gate monitoring
Function block diagram
General description
The function block can be used for the evaluation of dual-channel switches. 1 pair or 2
pairs can be selected. For the behaviour of the dual-channel evaluation see Section
9.9.2 and Section 9.9.3.
Additionally the function block allows an optional function test monitoring.
Parameters of the function block
Parameter Possible values
Inputs  Single-channel
 Dual-channel equivalent (1 pair)
 Dual-channel complementary (1 pair)
 Dual-channel equivalent (2 pairs)
 Dual-channel complementary (2 pairs)
Function test  No function test
 Function test required
Discrepancy time pair 1
Discrepancy time pair 2
Can be set separately for the inputs 1A/1B and 2A/2B.
Values: 0 = disabled, 10 to 30,000 ms in 10 ms steps.
If enabled, the value has to be greater than the logic execution
time.
Synchronization time 0 = disabled, 10 to 30,000 ms in 10 ms steps. If enabled, the
value has to be greater than the logic execution time.
Number of outputs 1 to 6
Use fault present  With
 Without
Figure 182:
Function block diagram for
the Safety gate monitoring
function block
Table 86:
Parameters of the Safety
gate monitoring function
block