Mitsubishi Electric WS0-CPU0 - Function Block Overview

Chapter 9
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Logic programming – Function blocks
9.3 Function block overview
The MELSEC-WS safety controller uses function blocks to define the safety-oriented
logic. There are logic function blocks and application-specific function blocks. The
following table lists all function blocks available in the CPU modules:
Logic
 NOT
 AND
 OR
 XOR (exclusive OR)
 XNOR (exclusive NOR)
 Multiple release
 RS Flip-Flop
 JK Flip-Flop
 Multiple memory
 Binary decoder
 Binary encoder
 Routing 1:N (signal duplication)
 Routing N:N
(N inputs to N outputs parallel)
Start/Edge
 Reset
 Restart
 Start warning
 Edge detection
Delays
 On-delay timer
 Off-delay timer
 Adjustable on-delay timer
 Adjustable off-delay timer
Counter and cycle
 Event counter
(up, down, up and down)
 Clock generator
 Ramp down detection
 Frequency monitor
 Log generator
EDM/Output blocks
 EDM
 Valve monitoring
 Fast shut off with bypass
 Fast shut off
Muting/Press
 Sequential muting
 Parallel muting
 Cross muting
 Universal press contact
 Press single stroke
 Press setup
 Press automatic
 N-break (PSDI - Press with N-PSDI
mode)
 Eccentric press contact
Other
 User mode switch
 Emergency stop
 Safety gate monitoring
 Magnetic switch
 Light curtain monitoring
 Tolerant dual channel monitor
 Two hand control type IIIA
 Two hand control type IIIC
 Multi operator
 Switch synchronization
 Error output combination
User defined function blocks
 Grouped function block  Customized function block
Table 19:
Overview of the CPU
module function blocks