Mitsubishi Electric Melsec Q Series Programming Manual page 395

5 OPERATION CONTROL PROGRAMS
[Errors]
(4) During the execution of the CAMMK instruction, another CAMWR instruction,
CAMWR2 instruction or CAMMK instruction cannot be processed.
During the execution of the CAMMK instruction, the cam data writing flag (SM505)
turns on. Therefore, create an interlock. When the CAMWR instruction, CAMWR2
instruction or CAMMK instruction is executed while the cam data writing flag
(SM505) is ON, an error occurs.
(1) An operation error will occur, and the cam auto-generation will not be executed if:
• Cam No. specified with (S1) is outside the range of 1 to 256.
• Auto-generation type specified with (S2) is set to a value that does not
correspond to an auto-generation type.
• The device numbers storing the auto-generation data specified with (S3) are
outside the range.
• (S3) are not even-numbered devices.
• The writable area is insufficient when the cam data is being written.
• A value outside the range is set for the auto-generation data.
• For the cam for rotary cutter, a value has been set as "sheet synchronization
width  sheet length" in the auto-generation parameter.
• For the cam for rotary cutter, the asynchronous speed will be reduced when the
auto-generation data is set as "synchronous axis length (synchronous axis
diameter × ") < sheet length".
• For the cam for rotary cutter, the asynchronous speed is 655.35 times of larger
than synchronous speed by auto-generation data.
• The cam auto-generation was performed with the "Write protection" or
"Read/write protection" password set in the cam data.
• The CAMMK instruction is executed during the cam data writing (CAMWR
instruction, CAMWR2 instruction, CAMMK instruction).
• For the easy stroke ratio cam, the end point set for each section are not in
ascending order.
• For the easy stroke ratio cam, the end point of the final section is less than the
cam axis length per cycle.
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