Technical data

Making Hardware Connections
Manual Documentation Number: ESP904-4513m Chapter 2 9
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone] – www.bb-elec.com
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone] – www.bb-europe.com
Network
Connector
RJ-45
female
Power jack
2.5 mm Tip (+)
Reset
Switch
Figure 4. Top View of the ESP904
Serial Ports
The ESP904 has four serial ports, each configurable through software as RS-
232, RS-422 or RS-485 interfaces. When in RS-232 mode the interfaces are
configured as DTEs (Data Terminal Equipment).The connectors are DB-9M.
Serial Ports
1234
Figure 5. The ESP904 Serial Port Connectors
Serial Server/Port Operational Modes
Using the ESP Manager the ESP904 Serial Server can be put into Console
Mode, Default Mode or Upgrade Mode. The serial ports can be configured
for RS-232, RS-422 or RS-485 operation.
Default Mode
When Default Mode is selected and the Server Properties are Updated
(Saved) all the configuration settings return to their default values. The
default settings for the ESP904 serial ports are: Console Mode for Port 1;
RS-232 mode for Ports 2, 3 and 4.
N
N
o
o
t
t
e
e
:
:
Refer to Chapter 5 for details on Server Configuration settings Refer to Chapter
12 for Serial Server default parameters.