Creating Motion Cpu Side User Safety Sequence Program - Mitsubishi Electric MELSEC Q Series Programming Manual

3 START-UP PROCEDURES

3.5.2 Creating Motion CPU side user safety sequence program

User safety sequence program controls output of safety signals. The safety cannot be ensured
with incorrect sequence program. Make sure to check the safety signal control logic.
Up to 64k bytes
Read this section to create a Motion CPU side user safety sequence program. The
Motion CPU side user safety sequence program judges the safety signal inputs of
Motion CPU to control the safety signal output of Motion CPU.
Create a sequence program to release the forced stop when the operation setup
conditions are satisfied from the safety signal status. Assigned the forced stop input
setting in the system basic setting (Refer to Section 3.4.1 (3).). When the
corresponding assigned device is OFF, the Motion CPU becomes in the forced stop
status and all servo motors are OFF and do not drive.
(1) PLC type/program type
Select "Q03UD" as a PLC type for the project of a user safety sequence program
of Motion CPU side. In addition, select "Ladder" for a programming language.
The sequence program processing function of Motion CPU is not equivalent with
Q03UDCPU. The program size, the used device and the sequence instruction,
etc. are limited. Create the program according to the following contents.
(2) User safety sequence program size
The size of Motion CPU side user safety sequence program can be registered up
to 8k steps (32k byte). However, a large size sequence program may affect the
Motion operation cycle. Create a program of around 1k steps.
The following figure shows the overall configuration of a user memory area for
storing a sequence program of Motion CPU.
Control information
Sequence program
User memory
Data Comments
CAUTION
Information area for file management.
Generated automatically at the PC memory format.
Sequence program
Up to 10 programs, and up to 8000 steps
(step 1 = 4 bytes) can be registerd.
Data Comments
Capacity excluding control information and sequence
program from full capacity of user memory area can
be used.
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