VAMP Ltd Ethernet adapter
User’s manual
VEA 3CGi
1.3. Operation
Figure 1.3-1 VEA 3CGi operation principle
Function
Open the communication tunnel between Port 23 / Telnet
and Local port, which enables the VAMPSET connection to
VAMP relay.
Open the communication tunnel between Port 502 and
Remote port, which enables the use of Remote port
protocols, e.g. Modbus TCP.
Initialization
After resetting, the VEA 3CGi performs the following the
initialization sequence:
1 Opening the Local port and configuration to speed 38400
b/s.
2 Obtaining the necessary setting from the relay through the
Local port.
3 IP setting in accordance with the information obtained from
the relay.
4 Opening and configurating of the Remote port according to
the information obtained from the relay.
5 Initialization of communication through Port 23 and 502.
6 Initialization of NTP query if IP address of the NTP server
has been obtained from the relay.
VMVEAi.EN001
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