Mitsubishi FX2N-16CCL-M, User Manual

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FX2N-16CCL-M CC-Link System Master Block Specification 4
4-22
4.6.5 Master block control signals
1) FROM/TO instruction access error judgement time: BFM#1C
H
This buffer memory sets the period of time to judge FROM/TO instruction access errors in
the unit of 10 ms.
The default value is 200 ms (K20).
For example, when you would like to set the judgement time to 10 ms, write "1" using the TO
instruction.
If the access time for read/write by the FROM/TO instruction from the PLC to the buffer
memory (excluding the buffer memory prohibited to use) in the FX
2N
-16CCL-M exceeds the
period of time set here, the system regards it as an access error.
<Setting range>
1 to 32,767
<Point>
Make sure to set a value larger than one scan time to the FROM/TO instruction access
error judgement time.
If the preset value is shorter than one scan time, an access time error may occur in some
programs.
You can check the maximum scan time of the PLC by referring to D8012 (unit: 0.1 ms).
2) Detection of accesses outside allowable range: BFM#1D
H
"1" is written here if there is a setting beyond the allowable specification range in the CC-
Link master for the FX Series.
When I/O operations and data link are not normally executed, you can check this buffer
memory to know whether or not an error has occurred.
3) Model code: BFM#1E
H
The model code "K7510" specific to the FX
2N
-16CCL-M is written.