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Users Manual & Installation Guide
PV- 5127: Power supply module with UPS
Page 11 of 31
PC/104 bus connector (CN1)
The PC/104 connector is for connecting the PV-5127 to the CPU and other PC/104 boards. There
is a female connector on the top, and pins on the bottom so that you can mount other PC/104 boards
both above and below the PV-5127.
The main +5V and +12V outputs are available in the PC/104 connector, so you don’t need to use
the KL3 outputs when drawing smaller currents. The maximum allowed current through the
PC/104 connector is 2A per pin. Using all three 5V pins in parallel together with at least three
GND pins allows a maximum of 5V/6A. There is one 12V pin, allowing max 12V/2A. For larger
currents, you must use the KL3 power connector.
The ATX signals (+5V STB, PS_ON and PWR_GOOD) are not available in the PC/104 connector.
The PC/104 bus is also used for software UPS status and power-off, see the UPS Control section.
The software interface uses the following signals:
PC/104 pin Function
A2 SD7
A3 SD6
A4 SD5
A5 SD4
A6 SD3
A7 SD2
A8 SD1
A9 SD0
A11 AEN
A22 SA9
A23 SA8
A24 SA7
A25 SA6
A26 SA5
A27 SA4
A28 SA3
A29 SA2
A30 SA1
A31 SA0
B13 IOW#
B14 IOR#
#
*
#
*
+"
+"
+"
+"
+"
+"
+"
,
,
,
,
-.
"
"