Mitsubishi Electric MELSEC-A User Manual page 9

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8.12.7 Extension comment memory readlwrite 8
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8.13 Global Function 8 - 1 3
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8.14 On-demand Function 8
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8.15 LoopbackTest 8 - 1 3
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COMMUNICATIONS WITH A COMPUTER IN THE NO-PROTOCOL MODE
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9.1 Basics of the No-Protocol Mode
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9.2 Handshake IlOSignals
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9.3 Programming Hints
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9.3.1
To write data to the special applications area in buffer memory
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9.3.2 Precautions during data communications
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9.4
Basic Program to ReadIWrite Buffer Memory
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9.5
Receiving Data in the No-Protocol Mode (External Device
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AJ71 UC24) .
9.6
Sending Data in the No-Protocol Mode (AJ71 UC24
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External Device)
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COMMUNICATIONS IN THE BIDIRECTIONAL MODE 10
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10.1 Bidirectional Mode Basics 10
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10.2 Handshake Signals and Buffer Memory 10
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10.3 Programming Hints 10
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10.3.1 System configuration and communications mode for bidirectional mode
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commun~cat~ons
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10.3.2 To write data to the special applications area in buffer memory
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10.3.3 Precautions during data communications
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10.4 Bidirectional Control Procedure Basics 10
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10.5 Bidirectional Communications Basics 10
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10.6 Processing an AJ71UC24 for Simultaneous Send in Full-Duplex Mode
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10.7 Basic Program to ReadIWrite Buffer Memory
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10.8 Receiving Data in the Bidirectional Mode (Computer
+
AJ71UC24)
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10.9 Transmitting Data in the Bidirectional Mode (AJ71UC24
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Computer)
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TROUBLESHOOTING 11
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1 NAK Error Codes with Dedicated Protocols
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11.2 Bidirectional Mode Error Codes
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11.3 Troubleshooting
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MULTIDROP LlNK FUNCTION
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SPECIFICATIONS FOR MULTIDROP LINK FUNCTION
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12.1 Transmission Specifications
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12.2 RS-4221485 Interface Specifications
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12.3 RS-422 Cable Specifications
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SETTINGS AND PROCEDURES BEFORE OPERATION
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13.1 Settings and Procedures before Operation
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13.2 Nomenclature and LED Signals and Displays
13.2.1 Nomenclature
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