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CHAPTER 21 FPS-T1U I
2
C BUS INTERFACE OPTION
21.1 Introduction
The FPS-T1U rack provides access to the I
2
C Bus interface in each installed FPS1000/S unit via the rear
panel MOLEX female connector located at the rear panel. The Clock is connected to pin 2 and the Data
is connected to pin 1. The specifications of the I
2
C of the FPS1000/S power supplies are kept when they
are installed in the FPS-T1U rack. Refer to Chapter 7 for the specifications and all operating details.
Module “A”
Module “B”
Module “C”
A0
1
0
1
A1
1
1
0
A2
1
1
1
21.2 Addressing (A0, A1, A2).
The address line of the FPS1000/S units installed in the FPS-T1U rack are internally fixed
Refer to the following table for detailes:
Note: Address are applicable when modules FPS1000/S (I2C option) are used
CAUTION
The I
2
C bus address lines, serial clock and data are
referenced to the -Sense potential. When using series
connection of FPS-T1U racks, do not connect the
I
2
C lines of the units together.
FPS-T1U Instruction Manual