Connection with the motherboard, Pin assignment – BECKHOFF C9900-P223 User Manual
Page 10
Installation Instructions
8
C9900-P223 / C9900-P224
Connection with the motherboard
Pin strips
on the output side
Connection with the
motherboard
The power supply unit is connected with the motherboard according to the
installation instructions of the board.
Pin assignment
Pin assignment of the
output connector
Connector: MOLEX-34045-1613
Pin
Signal
Pin
Signal
1
RX
9
TX
2
PS_ON
10
Powergood
3
ATXSW
11
5 V Standby
4
+ 12V
12
+ 12V
5
GND
13
GND
6
GND
14
GND
7
+ 5V
15
+ 5V
8
+ 5V
16
+ 5V
Signal description
Function
Description
RX
TTL-input RS232-interface (view from power supply)
TX
TTL-output RS232- interface (view from power supply)
PS_ON
TTL-input voltage request from motherboard
High -> motherboard reports "stand-by"
Low -> motherboard reports "connect voltage"
Powergood
TTL-output
Low -> voltages at motherboard connector not o.k.
High -> voltages at output connector o.k.
ATXSW
TTL-output
Enables the Power supply to boot the Industrial PC via the ATX-
switch:
Low -> motherboard logic shall open the ATX-switch
HIGH -> motherboard logic shall close the ATX-switch
GND
ground
VCC
+5V 20A
+12V
+12V 5A
5V-Standby
+5V 1A standby voltage