Physical Description

Introduction

This section describes the physical characteristics of the TM3 transmitter and receiver modules.

The following figure shows the parts of the TM3XTRA1 transmitter expansion module:

This table describes the main elements of the TM3XTRA1 transmitter expansion module shown above:

N°	Description	Refer to
1	LEDs for displaying the link activity and power supply status	–
2	TM3 bus port	–
3	Screw for functional ground connection	Grounding
4	Clip-on lock for 35 mm (1.38 in.) DIN rail	Top Hat Section Rail (DIN rail)
5	Expansion connector for TM3 I/O bus (left side only)	–
6	Locking device for attachment to the previous module	–

NOTE: The transmitter must be the last module in the local I/O expansion configuration.

The following figure shows the parts of the TM3XREC1 receiver expansion module:

This table describes the main elements of the TM3XREC1 receiver expansion module shown above:

N°	Description	Refer to
1	LEDs for displaying the link activity and power supply status	–
2	TM3 bus port	–
3	Power supply screw terminal block	Power Supply Wiring diagram
4	Clip-on lock for 35 mm (1.38 in.) DIN-rail	Top Hat Section Rail (DIN rail)
5	Expansion connector for TM3 I/O bus (right side only)	–