VESR424D Serial Server
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CONTROLS, INDICATORS AND CONNECTOR SPECIFICATIONS
Switches
Reset Button
Hold in for 0 to 2 seconds for hardware reset.
Hold in for 2 to 10 seconds for Console Mode (do a hardware reset
or recycle power to exit Console Mode).
Hold in for more than 10 seconds to reset to factory defaults.
Indicators
Serial LED
(one per port)
Color = Green
On = Port open
Flash = Data traffic
Ethernet Link LED
(one per port)
Color = Green
On = When connected
Flashing = Data traffic
Ethernet Speed LED
(one per port)
Color = Yellow
On = 100BaseTX
Off = 10BaseT
Ready LED
Color = Green
On Solid = System initializing
Flash (once per second) = System OK
Flash (twice per second) = System reboot
Off = System NOT OK
Connectors
10/100BaseTX Ethernet
Single RJ-45F (8-pin)
Serial
VESR424D: four DB9M connectors
DC Power
3-position pluggable terminal block, or locking barrel connector
NOTE: the terminal block must be used for Class 1 Division 2 applications; the
barrel jack cannot be used for these applications.
SERIAL INTERFACE SPECIFICATIONS
Serial Interfaces
Mode Selection
RS-232/422/485 - software selectable
RS-232 Lines
TXD, RXD, RTS, CTS, DTR, DSR, DCD, GND
RS-422 Lines
TXDA(-), TXDB(+), RXDA(-), RXDB(+), GND
RS-485 Lines (2-wire)
Data(-), Data(+), GND
RS-485 Lines (4-wire)
TXDA(-), TXDB(+), RXDA(-), RXDB(+), GND
Baud Rates
75, 150, 300, 600, 1200, 2400, 4800, 7200, 9600, 14400,
19200, 28800, 38400, 57600, 115200, 230400
Data Bits
5, 6, 7, 8
Parity
None, even, odd, mark, space
Stop Bits
1, 1.5, 2
Flow Control
None, RTS/CTS, XON/XOFF
RS-422/485 Biasing
Auto 1K Ohm pull-ups and pull-downs
RS-422/485 Termination
Termination with through-hole resistor (user supplied)
RS-485 Data Control
Auto control via MCU
