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Chapter 4 Multi-Drop Link Mode Control Procedure
72
4
● Specific ID polling ON
Command: POLEmm
[mm = 01 to 31 (ID number)]
Response: OK
ERR01: “mm” exceeds the range of “01” to “31”.
The “Specific ID polling ON” command is used to execute polling for the BL
series with the specified ID number only.
When the N-400 executes polling for several BL series in reading rate check
mode, a large amount of data is continuously sent from the BL series, which
causes the buffer overflow error because the polling interval is longer than the
reading interval.
To perform the reading rate check, use the “Specific ID polling ON” command.
● Checking auto polling
Command: POLE
Response: mm OFF
mm = 01 to 31 (ID number)
Auto polling is performed for the BL series specified by “IDmm” only.
mm = 00: Auto polling ON
OFF: Auto polling OFF
● Auto polling OFF
Command: POFF
Response: OK
Checking connections in multi-drop link mode
Checks if the RS-485 communication between the N-400 and each BL series is
normal.
Command: SRCmm
[mm = 01 to 31 (ID number)]
Response:
OK: Connection is correct.
NC: “Disconnection” error
SERR: Communication error
ERR01: “mm” exceeds the range of “01” to “31”.
Controlling reading operation
Used to activate the reading trigger signal using a command in multi-head scan
mode.
* This command can be used in multi-head scan mode only.
● Starting reading
Command: LON
Response: None
● Ending reading
Command: LOFF
Response: None
You can start/end reading operation by sending the above command in the
same way as when using trigger input.
These commands can be used in multi-head mode only.
- User's Manual 1
- Software License Agreement 2
- Safety Precautions 3
- List of Package Contents 4
- Contents 5
- Chapter 6 PLC Link 7
- WARRANTIES 7
- Chapter 1 9
- 1.1 Functions of the N-400 10
- 1.2 System Configuration 12
- 1.3 Part Names 13
- POWER SD RD 14
- Chapter 2 17
- 2.1 Installing the N-400 18
- Connecting power supply 20
- Internal circuit 21
- Pin assignment 24
- Connecting power supply 25
- 2.3.3 Connecting RS-485 27
- Incorrect 28
- 2.4.1 Connecting power supply 29
- 2.4.2 Connecting BL series 29
- Connecting trigger input 31
- 2.4.5 Connecting RS-485 33
- Example 1 34
- Example 2 34
- See pp. 19, 20 and 25 34
- 2.6 Mounting Procedure 35
- 2.6.2 Mounting N-400 36
- 2.6.3 Mounting N-48 36
- 2.6.4 Mounting BL-U1 37
- Chapter 3 39
- 3.1 Installing Setup Software 40
- 3.2.1 Operating procedure 42
- Mouse pointer 44
- • • • 44
- Entering a value 45
- Entering characters 45
- 3.3.1 Setting procedure 46
- Header, Delimiter: p. 61 48
- Checksum: pp.133 and 134 48
- PLC link: p. 100 49
- PLC trigger area: p. 106 49
- DM head address: p. 106 49
- File register: p. 101 49
- Matched Not matched 54
- 3.5 Using Monitor 60
- 3.6 List of Error Messages 63
- Chapter 4 65
- 4.1 Multi-Drop Link Mode 66
- 4.1.2 Setup procedure 68
- 4.2.1 Auto polling 69
- Header % P 05 Terminator 70
- Read data 73
- ACK/NAK protocol 74
- RTS/CTS control 74
- Serial command 75
- Command Response 76
- Command CR Response CR 76
- 4.4.1 Communication procedure 77
- 4.4.2 Description of commands 78
- Saving registered ID numbers 79
- Controlling auto polling 79
- Controlling reading operation 80
- Clearing transmission buffer 81
- Checking trigger input status 81
- Shift to SETUP mode 81
- 4.5 N-400 Setup Command 83
- ■ Response error codes 84
- Description of setup commands 85
- ■ PROTOCOL SETUP 87
- ■ ID SETUP 89
- ■ RS-232C SETUP 89
- ■ RS-485 SETUP 90
- Command Command 92
- Chapter 5 95
- 5.1 Multi-head Mode 96
- 5.1.2 Setup procedure 97
- Setting the N-400 98
- Setting the host computer 98
- “Single” label reading mode 99
- “Multi 1” label reading mode 99
- “Multi 2” reading mode 100
- “Level” trigger signal 101
- “One-shot” trigger signal 101
- 5.3.1 Communication format 103
- 5.3.2 Handshaking protocol 103
- 5.3.3 Read error code 103
- See p. 72 104
- 5.6 Communication Time 106
- Chapter 6 109
- 6.1 PLC Link 110
- Chapter 6 PLC Link 111
- 6.2 Setup Procedure 112
- 6.2.2 Setting the N-400 113
- 6.2.3 Setting the PLC 114
- 6.3 Device Assignment 116
- See p. 40 118
- Real-time control 119
- Sequential processing 119
- See the ASCII code 120
- Reading trigger area 122
- 6.4 PLC Link Error 124
- 6.5 Communication Time 125
- Appendices 127
- Appendix A Specifications 128
- Appendix B Dimensions 130
- Appendix C Sample Programs 132
- Sample program for PLC link 134
- Program for the KV series 138
- Appendix D Troubleshooting 139
- Appendix F ASCII Code Table 142
- Calculation range 143
- HOST MODE 145
- PROTOCOL SETUP 145
- ID SETUP 146
- RS-232C SETUP 146
- RS-485 SETUP 146
- WARRANTIES AND DISCLAIMERS: 149
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