Yokogawa Value Series FX1000 Bedienungsanleitung Seite 191
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App-1
IM 04L21B01-17EN
Appendix
1
2
3
4
5
6
App
Index
Appendix 1 Data Dropout during Modbus
Communication
Data Dropout during Modbus Client
If the response to the previous command is not complete when the FX attempts to
issue a command to a server device, the FX cannot issue the command causing a data
dropout. Take appropriate measures by referring to the following figures.
Read cycle
Data dropout
(Servers 2 and 3)
Data dropout
(Server 3)
Server device 1
Server device 2
Server device 3
G
G
G
G
G
G
Read cycle
(Retry)
: Status lamp
: Response from the server device
: Command from the FX
Data dropout
(Servers 2 and 3)
Server device 1
Server device 2
Server device 3
Read cycle
Timeout value
Connection dropped
Data dropout
(Servers 2 and 3)
Server device 1
Server device 2
Server device 3
G
G
G
G
G
G
G
O
Connection dropped Connection recovered
Timeout value
G
G
G
G
O
Y
Connection retry time
1
G G
G GG
G
Y
O R
1. When the response from the server device takes a long time
2. When the connection is dropped because there is no response from the server device
3. When the communication recovers by connection retry
1: The first connection retry after the connection is
dropped is shorter than the specified interval.
The status lamp condition is an example when
connection retry is configured.
Appendix
- Communication Interface 1
- (/C2, /C3, /C7) 1
- Trademarks 3
- Revision History 3
- WARNING 4
- CAUTION 4
- Using the Operation Keys 5
- Contents 6
- Modbus Client 9
- Modbus Server 10
- Setting/Measurement Server 11
- FTP Server 12
- FTP Client 13
- Maintenance/Test Server 13
- Instrument Information Server 13
- User registration 14
- • Administrator 14
- Web Server 15
- E-mail Transmission 16
- SNTP Server/Client 17
- DHCP Client 17
- Other Functions 17
- Interface 18
- 1.3 Connecting the FX 19
- Releasing Network Information 23
- Setting the keepalive 24
- 1.4 Sending E-mail Messages 25
- E-mail Test 28
- E-mail Format 29
- Scheduled E-mail Format 30
- • Subject 30
- System Mail (Error) Format 32
- Report Mail Format 33
- Test E-mail Format 34
- Setting the Web server 35
- Port Number 35
- Setting the Web page 35
- Page Type 36
- Setting the monitor page 36
- Setting the operator page 36
- Monitoring with a Browser 37
- Contents of the Monitor Page 38
- Refreshing the page 38
- Contents of the Operator Page 39
- • Trend and Historical Trend 39
- • Other Screens 39
- All Channel Display 40
- Specify a message number 41
- FX from a PC 42
- When Using the Login Function 43
- Other Files from the FX 44
- Testing the FTP Transfer 46
- 1.8 Synchronizing the Time 47
- Setting the SNTP Server 48
- Setting the Modbus Server 49
- Data to Other Devices 51
- Examples of Setting Commands 53
- • Example 54
- • Communication Conditions 55
- • Communication Status 55
- Resuming Command Transmission 56
- Data Dropout 56
- Measured data 57
- About the Port Number 58
- Setting Command 59
- Modbus Master 65
- Modbus Slave 66
- Setting/Measurement Function 66
- 2.3 Connecting the FX 68
- Handshaking 69
- • OFF-OFF 69
- • XON-XON 70
- • XON-RS 70
- • CS-RS 70
- Connection 71
- Connecting to the host device 71
- • Four-wire system 72
- • Two-wire system 72
- CAUTION 73
- Connecting to the FX 82
- 3.1 Command Syntax 83
- Delimiter 84
- Sub Delimiter 84
- Terminator 84
- 3.2 List of Commands 86
- Control Commands 88
- Basic Setting Commands 89
- Output Commands 90
- 3.3 Setup Parameters 91
- IM 04L21B01-01EN 92
- TJ Sets memory sampling 96
- SA Sets an alarm 97
- SZ Sets a zone 99
- 3.4 Setting Commands 100
- TF Sets a data file name 101
- SD Sets the date and time 101
- TD Sets daylight saving time 101
- TT Sets the trend display 101
- Commands 103
- TQ Sets a timer 104
- TK Sets a match time timer 104
- TU Sets an event action 105
- IM 04L21B01-17EN 107
- Setting the low-cut power 108
- SM Sets the custom menu 109
- Setting the function menu 111
- 3.5 Control Commands 112
- 3.6 Basic Setting Commands 116
- Sets alarm hysteresis 118
- RN Sets basic login 120
- RP Sets user limitations 120
- /PWR1 options) 120
- 3.8 Output Commands 130
- (Setting, measured, and 130
- FF Outputs FIFO data 131
- FU Outputs user levels 132
- ESC O Opens an instrument 133
- ESC C Closes an instrument 133
- 4.1 Response Syntax 137
- Text Output 138
- Binary Output 138
- Calculating the Sum Value 140
- Sample Program 140
- • Example 143
- Syntax 143
- Example 143
- Measured and Computed Data 144
- • Syntax 145
- • Example 1 145
- Communication Log 146
- FTP Client Log 148
- Operation Error Log 149
- Login Log 150
- Web Operation Log 151
- E-mail Log 153
- SNTP Log 154
- DHCP Log 155
- Modbus Communication Log 157
- Alarm Summary 158
- Message Summary 159
- Status Information 160
- Ethernet Information 161
- File List 162
- Check Disk 163
- User Information 164
- Number of Blocks 166
- Number of Bytes 166
- • Block Member 167
- Special Data Values 167
- Format Details 168
- Block Details 168
- Manual Sampled Data 169
- Report Data 169
- Response 170
- Output Example 170
- Status Information 1 172
- Status Information 2 172
- Status Information 3 172
- Status Information 4 173
- Status Information 5 to 8 173
- Blank Page 174
- Basic Specifications 175
- RS-232 Specifications 176
- RS-422A/485 Specifications 176
- Modbus Client Function 177
- Command 178
- Modbus Server Function 180
- • Common Items 181
- • Details 181
- Bit string 182
- 16-bit signed integer 182
- • Operating Devices 183
- List of Registers 184
- How to Use 186
- Modbus Master Function 188
- Modbus Slave Function 189
- Communication 191
- Appendix 2 Login Procedure 193
- Russian Characters 195
- Korean Characters 196
- Internal Memory 197
- Are there more file lists? 198
- Overview of the FIFO Buffer 199
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