Contec BX220 Series - RAS Functions

5. Each Component Function
64
BX-220 User’s manual
RAS Functions
A RAS port is provided for this product. This port offers watchdog timer, remote reset, and
general-purpose I/O RAS functions.
*5 API is required to use RAS. For more information, visit the CONTEC's Web site.
Table 5.13. RAS Connector
Connector type
15 pin D-SUB (FEMALE)
No.4-40UNC
8 1
915
Inch screw threads
Pin No. Signal name Function
1 ---
None
9 GND
A signal ground
2 TX+
RS-422/485 transmitting line
10 TX-
3 RX+
RS-422/485 receiving line
11 RX-
4 NCOM
Minus common dedicated to PO2
12 PO2/WDT
General-purpose output or watch dog timer alarm
output
5 PO0
General-purpose output
13 PO1
6 NCOM
General-purpose output minus common
7 P11
General-purpose input
14 P12/IRQ
General-purpose input or interrupt input
8 PCOM
General-purpose input plus common
15 P10
General-purpose input
CAUTION
Pin 4 NCOM (minus common dedicated to PO2) and pin 6 NCOM (minus common shared by PO0
and PO1) are electrically separated from each other.