Mitsubishi MELSEC L Series User Manual page 255

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[How to specify the first frame No. and the last frame No.]
Set the frame numbers using the following setting method.
(1) For the receive user frames, the first frame and last frame are set as a pair,
regardless of whether the external device transmits these frames.
(If the external device does not transmit either one of the frames, the unsent frame
No. is set to "0" (no setting)).
(2) A maximum of four combinations of first and last frames can be set for the non
procedure protocol. (See Section 11.2.1.)
Of the maximum four combinations to be set, if there is a combination that
specifies the first frame, specify the first frame for all other combinations. In
addition, set in the following order starting from the first buffer memory (AE
B5 /14E to 155
H H
(When specifying the first frame)
(i) Each frame No. for combinations that specify the first frame and the last frame
(ii) Each frame No. for combinations that specify the first frame but not the last
frame
Of the maximum four combinations to be set, if there is a combination that
specifies the last frame only without specifying the first frame, the first frame
cannot be specified in any of the combinations. Set the number of the last
frame to be used in order starting from the first area of the buffer memory (AE
to B5 /14E to 155
H H
(3) When setting more than one combination, the first frame having the registered
data in the same arrangement or the same frame number cannot be designated.
However, the last frame can be designated.
(4) Use the user frame numbers of the following user frames to set the receive user
frames. (See Section 9.1.)
1) Default registration frame numbers: 1
2) User frame numbers registered in the Q series C24 flash ROM : 3E8
3) User frame numbers registered in the Q series C24 buffer memory: 8001
801F
H
(5) Do not specify (set) the frame No. of a user frame that includes the receive
transparent code designation additional code data shown in Chapter 12 as a user
frame for data reception using non procedure protocol.
11 DATA COMMUNICATIONS USING USER FRAMES
).
H
).
H
H
to 3E7
H
to
H
H
to 4AF
H H
to
H
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