Ascon tecnologic DY-5121, Руководство пользователя

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delta due DY-5121 - User manual
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Ethernet Settings (Modbus TCP)
Port number
Which port to use for Modbus TCP communication (502 default).
Gateway Registers
The address to the gateway internal registers (if enabled). See
section 5.2.1 for details about the internal registers.
Server Idle Timeout
This parameter gives the idle timeout in seconds for the Modbus/TCP
connection. If the protocol converter does not receive any Modbus/
TCP query within this time the connection will be closed. (Default
value is 60 seconds).
IP Authentication
This can be used to configure the IP-number that is allowed to
connect to the Gateway.
Note: It is of great importance to ensure at the time of the procedure of assigning Modbus
device addresses, that there are not two devices with the same address. In such a
case, an abnormal behavior of the whole serial bus can occur, the Master being
then in the impossibility to communicate with all present slaves on the bus.
5-2-1 Internal Registers
If Gateway registers are enabled, queries sent to that address will not be
forwarded to the Serial Modbus/RTU network; the protocol converter will respond
to these queries by it self.
See Appendix B for a list of the internal registers.
Valid Modbus commands for internal registers:
Note: The internal registers are also available as an “internal template”, i.e. the registers
can be used on presentation pages and as alarms/log entries.
Command Name
3 Read Holding Registers
6 Preset Single Register
16 Preset Multiple Registers