Operating Instructions

Chapter 2—Hardware Features
TX-I/O Product Range Overview
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Siemens Industry, Inc.
Owner's Manual
588-781
Building Technologies
2018-10-01
The keys are available in sets of 24, up to a maximum value of 72 (two sets of 12, 1-
24, 25-48, and 49-72).
● The I/O module address is mechanically encoded in the address key.
– Without an address key, the module is inactive.
– With an address key inserted, the module has full functionality.
● Based on the address, the TC-1000 or TC-36 configures the I/O module, indicates
which field devices are connected to this module, and which function is required for
the field devices.
When replacing the plug-in I/O module, the address key must first be swiveled
outward. This switches the load off but values remain saved in the TC-1000 or TC-36.
The key remains plugged into the terminal base so that the TC-1000 or TC-36 can
communicate the required function to the new I/O module.
Reset Key
The reset key sets the module back to the factory settings (default function on each of
the I/O points):
● The reset key is inserted in place of the address key and then swiveled out again.
● The module indicates the reset by briefly lighting all its I/O status LEDs.
● Note that a reset is only possible when the module is supplied with 24 Vdc.
TX-I/O Power Supply and Bus Modules
The TX-I/O™ Power Supply and Bus Modules provide power, communications, and
expansion options for the TX-I/O Island Bus.
Power and Communication Modules
The TX-I/O Power Supply and Bus Connection Module provide the following functions
for the island bus:
Function
Product
TX-I/O Bus Communication
24 Vdc power
24 Vac power
TX-I/O Power Supply
(TXS1.12F4)
Signal pass-thru
Output 28.8 W
(1.2A at 24 Vdc)
● NEC Class 2 Output , 96 VA max.,
fused at 4A
● Class 1 Power Limited Input, 150
VA max.
Bus Connection Module
(TXS1.EF4)
● Signal pass-thru
● Allows for external
connection of I/O signals.
Pass-thru
● NEC Class 2 Output, 96 VA max.,
fused at 4A
● Class 1 Power Limited Input, 96 VA
max.
NOTE: 10A versions are not sold in North America.