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B Protocols TAC Xenta Server – Gateway, Technical Manual
144 (184) Schneider Electric Buildings AB, June 2011
04-00124-06-en
Xenta 913 to read the register’s value once at start-up before it
assumes control of it.
• Coefficient Gain and Offset
– Allow the raw register value to be
converted into the desired absolute units. If the raw register value
is a real number then normally no conversion is necessary and the
default gain and offset of 1 and 0 can be used. But if the raw regis-
ter value is an integer then it often needs to have a gain and offset
applied.
As an example, a power meter might generate voltage values as
unsigned integers with the actual voltage multiplied by 10. In this
case the Xenta 913’s gain should be set to 0.1 to convert the raw
units (10*V) into the required absolute units (V).
• Signal DataType
– Is set to a default of BOOL, INTEGER or
REAL based on the selected register type. But the default data
type may subsequently need to be changed to suit the applied con-
version coefficient. For example, if a gain of 0.1 is applied to an
integer it will produce a real value, so the default DataType would
be changed to REAL in this case.
• Signal Measurement System
– The measurement system param-
eters need to be manually set to match the absolute form of the
register value after conversion by the coefficient gain and offset,
being either an enumeration or analogue engineering unit as appli-
cable.
Note
•The W and R/W I/O options should only be selected for the reg-
ister types that are described as having read and write capability
in the preceding Register Number table.
Note
• For the Modbus TCP protocol, communications are improved if
the signals (register addresses) are added in sequence in the
device editor starting with the lowest register number.
- TAC Vista 1
- Contents 5
- REFERENCE 6
- Index 181 8
- INTRODUCTION 9
- 1 About this Manual 11
- 1.2 Structure 13
- 1.3 Typographic Conventions 14
- 1.4 Prerequisites 14
- 1.5 New in This Edition 14
- 1.6 Related Documents 15
- GETTING STARTED 17
- 2 Planning the Project 19
- 2.2 The Target System 20
- Important 21
- Fig. 2.2: The ACME building 22
- 2.4.1 Units 23
- 2.4.2 Devices 24
- TAC Vista Device Structure 25
- TAC Xenta 913 25
- Energy Meter PM710 25
- 2.5 Developing the Project 26
- 2.6.1 Folder Structure 27
- 3 Creating a Project 29
- 3.2 Creating a Project 30
- 11 Click OK 32
- 3.4 Saving the Project 34
- To create a device template 38
- To add signals for a device 40
- Fig. 5.1: 43
- To rename the root folder 44
- 5.1.2 Adding a Folder 45
- 6 Visualizing Signals 47
- 6.2 Adding a Signal 48
- 6.3 Adding a Values Page 51
- To add more values pages 53
- LonWorks Network 55
- 8 Connecting to the LonWorks 59
- Unrecognized Units 62
- To add a connection object 66
- Connection Object 67
- PM710_Signals RTU4_Signals 67
- 9 Creating SNVTs 73
- 9 Click OK 75
- 10 Using Signals 81
- 10.1.2 Output SNVTs 83
- An example of an output SNVT 84
- 10.1.3 Input SNVTs 85
- An example of an input SNVT 86
- 10.2 Connection Objects 87
- 10.3 Multi-Connection Objects 88
- 10.3.1 Validating the Signals 89
- Communication 91
- 11.3 The Device Templates 93
- 11.9 Enumerations 98
- 12 Working with Third-party 99
- Communication Diagnostics 99
- 04-00124-06-en 100
- Driver Selection 101
- Verbosity 102
- Output log file 103
- APPENDIX 107
- A.1 General 109
- A.2 Basic TCP/IP Settings 112
- What is an HTTP Session? 114
- Rules of Thumb 114
- B Protocols 117
- B.1.1 Modbus Master Networks 118
- B.1.2 Modbus Master Interface 119
- B.1.3 Modbus Slave Device 120
- Device Status Signal 121
- B.1.4 Modbus I/O Signals 122
- Fixed Address Blocks 123
- Functions 123
- Description 123
- B.2 Modbus Serial Line Slave 127
- B.2.1 Modbus Slave Networks 128
- B.2.2 Modbus Slave Devices 129
- B.2.3 Pseudo Slave Devices 130
- B.2.4 Modbus I/O Signals 132
- Format Functions Description 133
- B.3 Modbus TCP Client 136
- B.3.1 Modbus TCP Networks 137
- B.3.2 Modbus TCP Interface 138
- B.3.3 Modbus Slave Devices 139
- B.3.4 Modbus I/O Signals 140
- Fig. B.4: BACnet IP 145
- B.4.1 BACnet IP Networks 146
- B.4.2 BACnet IP Interface 147
- Interface Status Signals 148
- BACnet Target Devices 148
- Device Template 149
- Device Properties 149
- B.5.1 BACnet MS/TP Networks 152
- B.5.2 BACnet MS/TP Interface 153
- B.5.3 BACnet Target Devices 155
- Fig. B.6: BACnet PTP 158
- B.6.1 BACnet PTP Networks 159
- B.6.2 BACnet PTP Interface 160
- B.6.3 BACnet Target Devices 162
- B.7 M-Bus Metering 165
- B.7.1 M-Bus Metering Networks 166
- Interface Properties 167
- B.7.3 M-Bus Meters 169
- B.7.4 M-Bus I/O Signals 171
- Clipsal C-Bus 174
- B.8.1 C-Bus Lighting Networks 175
- B.8.4 C-Bus I/O Signals 178
- Last Manual Page 184
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