Tx-I/O Island Bus; Admissible Number Of Devices; Structure Of The Island Bus Rows; Installation Rules And Limitations - Siemens TALON Series Technical Reference Manual

TX-I/O Island Bus

Admissible Number of Devices

TX-I/O Power Supply Module
Bus Connection Points
TX-I/O Island Bus
I/O Row

Structure of the Island Bus Rows

Installation Rules and Limitations

Siemens Industry, Inc.
588-587
A TX-I/O™ island bus is composed of one TC Modular or TC-36, a TX-I/O Power
Supply module, and I/O modules.
Only one controller is used per island bus—either a TC Modular or a TC-36.
The TC Modular supports 64 I/O modules or a maximum of 500 points.

The TC-36 supports two I/O modules (approximately 32 points).

A maximum of four TX-I/O Power Supply modules may be connected in parallel per island
4 TX-I/O Power Supply modules + 12 Bus Connection Modules = 16 bus connection points.
Up to two TX-I/O Power Supply modules may be connected in parallel per I/O row.
The following devices are combined to create rows of I/O modules in the island bus:
TX-I/O Power Supply module (TXS1.12F4)

Bus Connection Module (TXS1.EF4)

I/O modules

The first device mounted on each island bus row must deliver the bus signal, the I/O
module power supply, and the field device supply. This would be a TX-I/O Power
Supply or Bus Connection Module.
A maximum of four TX-I/O Power Supply modules may be connected in parallel per
island bus.
If the 24 Vdc supply (maximum 1.2 A) is "used up" by the I/O modules and field

devices, an additional TX-I/O Power Supply module is required (operating in
parallel with the first one).
CONFIDENTIAL: For internal use only
Maximum number bus connection points per island bus: 16
Only one controller is used per island bus
Up to 64 modules or a maximum of 500 points
Up to two modules (approximately 32 points)
TALON TX-I/O Modules and Island Bus Technical Reference
TX-I/O Island Bus
bus.
Example
TC Modular
TC-36
35
4/6/2010