Mitsubishi MELSEC LJ71C24, User Manual

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A - 13 A - 13
10.1.3 Sequence program for data reception......................................................................................... 10-11
10.1.4 How to detect and check the reception errors ............................................................................ 10-14
10.1.5 Receive data clear ....................................................................................................................... 10-17
10.1.6 Received data count and receive complete code settings ......................................................... 10-23
10.2 Sending Data to the External Device ................................................................................................. 10-26
10.2.1 Transmission methods................................................................................................................. 10-26
10.2.2 Arrangement and contents of the transmission area and the transmission data ...................... 10-27
10.2.3 Sequence program for transmission data ................................................................................... 10-29
10.2.4 How to detect and confirm transmission errors........................................................................... 10-33
10.3 Data Communications Precautions.................................................................................................... 10-35
11 DATA COMMUNICATION USING THE BIDIRECTIONAL PROTOCOL
11.1 Data Reception from the External Device.......................................................................................... 11- 2
11.1.1 Receiving methods....................................................................................................................... 11- 2
11.1.2 Arrangement and contents of the receive area and the receive data ........................................ 11- 4
11.1.3 Sequence program for data reception......................................................................................... 11-10
11.1.4 How to detect and check the reception errors ............................................................................ 11-13
11.1.5 Receive data clear ....................................................................................................................... 11-14
11.2 Sending Data to the External Device ................................................................................................. 11-15
11.2.1 Transmission methods................................................................................................................. 11-15
11.2.2 Arrangement and contents of the transmission area and the transmission data ...................... 11-16
11.2.3 Sequence program for data transmission ................................................................................... 11-19
11.2.4 How to detect and confirm transmission errors........................................................................... 11-23
11.3 Processing when Simultaneous Transmission Performed During Full-Duplex Communication ..... 11-25
11.3.1 Processing when simultaneous transmissions occur ................................................................. 11-25
11.3.2 Communication data processing when simultaneous transmissions occur .............................. 11-26
11.4 Data Communications Precautions.................................................................................................... 11-28
12 DEDICATED INSTRUCTIONS
12.1 Dedicated Instruction List and Available Devices .............................................................................. 12- 1
12.2 G(P).ONDEMAND .............................................................................................................................. 12- 3
12.3 G(P).CPRTCL ..................................................................................................................................... 12- 7
12.3.1 Functional protocol....................................................................................................................... 12-14
12.4 G(P).OUTPUT..................................................................................................................................... 12-15
12.5 G.INPUT.............................................................................................................................................. 12-19
12.6 G(P).BIDOUT ...................................................................................................................................... 12-23
12.7 G(P).BIDIN .......................................................................................................................................... 12-27
12.8 G(P).SPBUSY..................................................................................................................................... 12-31
12.9 ZP.CSET (Receive data clear) ........................................................................................................... 12-33
13 DEBUG SUPPORT FUNCTION
13.1 Circuit Trace ........................................................................................................................................ 13- 1
13.1.1 Procedure for the circuit trace...................................................................................................... 13- 2
13.1.2 Execution of the circuit trace........................................................................................................ 13- 3
13.1.3 Circuit trace option setting ........................................................................................................... 13- 5
13.2 State Monitor ....................................................................................................................................... 13- 7
13.3 Protocol Execution Log Display Storage Function (for Predefined Protocol only) ........................... 13-12
13.3.1 Checking with GX Works2........................................................................................................... 13-13