User`s manual

269

CHAPTER 11 DATA COMMUNICATIONS USING USER FRAMES

11.2 Data Reception

[How to specify the first frame No. and the last frame No.]

Set the frame numbers using the following setting method.

• 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)).

• A maximum of four combinations of first and last frames can be set for the non procedure protocol. (

Page 254, Section 11.2.1)

(When specifying the first frame)

• Each frame No. for combinations that specify the first frame and the last frame

• Each frame No. for combinations that specify the first frame but not the last frame

*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 (AEH to B5H/14EH

to 155H).

*2 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 (AEH to B5H/14EH to 155H).

• 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.

• Use the user frame numbers of the following user frames to set the receive user frames. ( Page 220,

Section 9.1)

• Default registration frame numbers: 1H to 3E7H

• User frame numbers registered in the Q series C24 flash ROM: 3E8H to 4AFH

• User frame numbers registered in the Q series C24 buffer memory: 8001H to 801FH

• 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.