PRODUCT MANUAL - BARIX X8 - V01.05 - 10/26/2006
A regulated 5VDC output is available to provide power to small
devices, LEDs etc. To prevent overheating of the voltage regulator
the sourcing current of 5VDC and all used outputs combined
should not exceed
24mA @ 30VDC Vin, 32mA @ 24VDC Vin,
85mA @ 12VDC Vin or 100mA@ Vin <= 11VDC.
The BARIX X8 has an RS-485 host interface, available on a
spring
contact connector block
.
Besides A and B signals for the differential, bidirectional bus
signal, a third connection is available, commonly referred to as
reference ground. This signal is internally tied to signal ground
via a 100 Ohm series resistor.
Termination resistors are NOT provided on-board. A termination
resistor may be added at each end of the RS-485 bus if required.
The BARIX X8, as well as other Barix I/O extension units, feature
soft pull-up (B) and pull down (A) 10kOhm resistors, which force
the inactive bus to a relatively high impedance, idle condition.
Both A and B line signals are heavily protected against ESD
(Electrostatic Discharge).
Supported interface configurations are
19200 baud, 8bit, even parity, 1 stop bit (**default**)
19200 baud, 8bit, no parity, 1 stop bit
9600 baud, 8bit, even parity, 1 stop bit
9600 baud, 8bit, no parity, 1 stop bit
4 LED indicators on the unit show the conditions CPU heartbeat
as well as RS-485 receive and transmit activity.
The BARIX X8 contains 256 bytes of non volatile configuration
memory (EEPROM) which can be read and (most of it) written via
standard Modbus commands.
Hardware
·
3
Configuration
Memory
LED Indicators
RS-485
5VDC output
