Rack Position: BMX NOE 01x0 and BMX P34 20x0x

Introduction

This topic describes the appropriate rack positions of the BMX NOE 01•0 modules and BMX P34 20x0x CPUs on a station assembly during installation.

Available Modules

A Modicon M340 CPU can manage an entire rack. These three CPUs have Ethernet communication ports:

BMX P34 2020
BMX P34 2030
BMX P34 20302

The BMX P34 20x0x CPUs can manage a station composed of:

discrete I/O modules
analog I/O modules
function modules (counting, communication, etc.)

NOTE: Refer to the Modicon X80 Racks and Power Supplies, Hardware, Reference Manual for specific part numbers.

Rack Position

The following rack assembly includes a Modicon M340 CPU (in this case a BMX P34 2030) and a BMX NOE 01•0 module (in this case a BMX NOE 0100). Rack positions 0 to 8 are indicated. (The double-wide power supply is mounted at the beginning of the rack.)

BMX P34 2030 CPU at rack position 0

discrete I/O module at rack position 1

counter module at rack position 2

BMX NOE 0100 Ethernet communications module at rack position 3

4-7

available rack positions

Modicon M340 extension module at rack position 8

Module Positioning

Mechanically, it is possible to position the BMX P34 CPU or the I/O modules in any slot. However, we recommend placing the modules in these positions:

BMX P34 20x0•: Place the CPU at position 0. Position 0 also conforms to the CPU form factor.
BMX NOE 01x0: Modules that conform to the Modicon M340 I/O form factor, such as the BMX NOE 01•0 modules, can be placed in any other available slot.
BMX CPS 2000: The double-wide rack power supply is mounted at the beginning of the assembly on the left.

BMX P34 20•0• Processors

The following table shows the rack operations and communications details for the BMX P34 20x0x CPUs:

CPU	Physical Format	Maximum Number of I/O*		Maximum Memory Size	Integrated Port
CPU	Physical Format	Discrete	Analog	Maximum Memory Size	CANopen	Ethernet	Modbus Serial
BMX P34 2020	simple	1024	256	4096 Kb	—	X	X
BMX P34 2030/20302	simple	1024	256	4096 Kb	X	X	—
*: per rack
X: available
—: not available