Product manual

B Protocols TAC Xenta Server – Gateway, Technical Manual
140 (184) Schneider Electric Buildings AB, June 2011
04-00124-06-en
B.3.4 Modbus I/O Signals
Each Modbus Slave device represents a specific type of hardware
device. There are two main ways to work with Modbus I/O signals,
Fixed Address Block and Full Address Range register.
Fixed Address Blocks
When Fixed Address Blocks is used for the device all data types have
to adhere to the fixed address number according to Table B.1, “Fixed
Address Blocks number ranges”
Full Address Range register
When Full Address Range register is used for the device, the table type
(Coil, Discrete Input, Input Register or Holding Register) has to be
specified in the Register Table. See Table B.2, “Full Address number
ranges”
Note
• It is not possible to mix Fixed Address Blocks register table type
with Full Address Range register table types in the same device
template.