Technical data

Server Properties Configuration
34 Chapter 5 Manual Documentation Number: ESP904-4513m
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 RS-232 – When this mode is selected and the server updated, the
selected serial port will become an RS-232 serial port on the server.
 RS-422 – When this mode is selected and the server updated, the
selected serial port will become an RS-422 serial port on the server.
 RS-485 – When this mode is selected and the server updated, the
selected serial port will become an RS-485 serial port on the server.
Connection At
When the Connection Mode field is set to Client or Client (no heartbeat),
this field becomes active, allowing the ESP901/902 (acting as a client) to
connect to the server either on Power up or on Data Arrival (first character
arriving).
Max Connection
This field allows the user to configure the Serial Server to have up to eight
TCP connections.
Remote IP Address
This is a security feature activated by entering the IP address of the desired
client. The ESP904 will only communicate with the listed IP address and all
other requests for connection will be filtered out. The ESP904 must be set up
as a TCP or UDP Server to use this feature. The default setting is
255.255.255.255.
If Paired Mode is not being used, do not change this setting until the
application has been tested and is communicating properly. Then activate the
address filtering feature.
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Refer to Chapter 1 Paired Mode
Update/Save
Server properties must be updated separately for each serial port. Updating
varies slightly depending on which of the four configuration user interfaces
are used.
Updating the Server Properties in ESP Manager
From the Server Properties screen, click the Update button to store the configuration
settings for the currently selected port. The vcomui dialogue box will appear
ndicating you must restart the device before the new settings will take effect.