Modicon Momentum NZ | 170ADM35010 170ENT11001 M1E Adapters

Schneider Modicon Momentum

Schneider / Modicon Momentum

The same I/O base is either distributed I/O or a complete PLC, depending on what you clip onto the top of it. Nothing in the base part number tells you which.

Modicon Momentum, also branded TSX Momentum, is the Schneider distributed I/O and compact PLC platform. Discontinued, and still widely installed across New Zealand plant.

A Momentum node is built from separate parts

Understanding this decides what you order, and it is why Momentum quotes go wrong.

Layer	What it does	Prefix
I/O base	Carries the field wiring and the I/O circuitry	170A, 171C
Adapter	Either a communication adapter or a processor adapter	170ENT, 170FNT, 170INT, 170DNT, 170PNT, or an M1 or M1E processor
Option adapter	Optional third layer between processor and base	172P

Schneider describes the base as having an internal interface connector for the communication module or processor module. One or the other.

The same base does two completely different jobs

Base plus	You have
A communication adapter	Distributed I/O, reporting to a PLC elsewhere
A processor adapter	A standalone PLC with its own program

A 170ADM35010 on its own is neither. It is an I/O base waiting for a top half.

So when a Momentum node fails, the first job is working out which layer failed. The answer changes the price by an order of magnitude and it changes whether you have to disturb the field wiring.

Which half failed?

Worth thinking through before ordering.

Failed part	What replacing it involves
Adapter	Unclip and swap. Field wiring untouched. The network address may need setting
I/O base	Rewiring. Every field connection comes off and goes back on

The adapter is the electronics and the base is the wiring. Adapters carry the network interface and the processing; bases are largely passive.

So an adapter failure is a short job. Tell us which one you need and we will not quote the pair.

The communication adapters, by network

The adapter is chosen by the network the node sits on, and they are not interchangeable.

Reference	Network
170ENT11001	Ethernet TCP/IP, 10/100 Mbit/s
170ENT110 series, earlier	Ethernet, 10 Mbit/s only
170FNT11001	FIPIO
170INT11000, 170INT11003	Interbus, twisted pair
170DNT11000	PROFIBUS DP
170PNT11020	Modbus Plus
170PNT16020	Modbus Plus, redundant port

Note the two Ethernet generations. The 170ENT11001 runs 10/100 Mbit/s where earlier adapters were 10 Mbit/s only. On a modern network the older one may negotiate badly or not at all.

And the redundant Modbus Plus adapter is a different part. A 170PNT16020 has a second port for a redundant network; a 170PNT11020 does not. If your plant runs redundant Modbus Plus, the standard adapter halves your resilience without any obvious symptom.

Processor adapters, M1 and M1E

Type	Notes
M1	Processor adapter, Modbus and I/O bus variants
M1E	As M1 with Ethernet
171CBU98090	Unity M1E processor
171CCC96030	Integrated CPU with 12 fast 24 V DC inputs and digital outputs on board

Published processor adapter specifications

Item	Value
Clock speed	20 MHz or 32 MHz depending on variant
Discrete I/O capacity	2048 inputs and 2048 outputs
Higher capacity variants	Up to 8192 discrete bits
Ports	Modbus, RS-232/485, Ethernet, USB and I/O bus, depending on variant
Memory	Flash and RAM
Operating temperature	0 to 60 degrees C, non-condensing

The port combination is the thing to match. Variants exist with one Modbus, two Modbus, one Modbus plus one I/O bus, and Ethernet combinations. A processor adapter with the wrong ports is not a replacement however similar the specification looks.

The Unity M1E processors such as the 171CBU98090 run Unity Pro, where the earlier M1 adapters use Concept or ProWORX. Same software generation question as the rest of the Modicon range.

The option adapter, and where the battery lives

A third layer that sits between the processor adapter and the base.

Reference	Function
172PNN21022	Option adapter with one Modbus Plus port on board
Serial link option adapter	Single
Modbus Plus option adapter	Redundant

Schneider's assembly sequence is: assemble the M1 processor adapter and the option adapter together, then mount the assembled pair onto the I/O base.

The battery is in the option adapter

Worth knowing, because it is not where you would look.

Schneider's manual covers installing batteries in a Momentum option adapter, not in the processor.

So a node without an option adapter has no battery backup. And if a Momentum PLC is losing its retained data, the option adapter is where to look rather than the CPU.

Some bases ship without terminal blocks

A straightforward ordering trap that appears in the catalogue descriptions.

Several Momentum bases are listed explicitly as without terminal block, including the 170ADM39030 and the 170ANR12090.

The terminal block is a separate part on those. Order the base alone and you have nothing to land the field wiring on.

If you are replacing a base, the existing terminal block may be reusable. Tell us and we will check whether you need one.

What is on an I/O base

From the Schneider description of the 170ADM35010:

Internal interface connector for the communication or processor module
Locking and ground contact for that module
Slot for the power strip
Two screw holes for panel mounting
Protective cover
Grounding screw for the front panel

Bases fit compact standard housings and mount on DIN rail or on a panel.

Note the power strip is its own component. Another small part that can be missing from a used base.

The I/O base range

Reference	I/O
170ADM35010	16 inputs and 16 outputs, 24 V DC, solid state
170ADM39030	10 inputs and 8 outputs, without terminal block
170ADO35000	Discrete output
170ADO54050	16 transistor outputs
170AAI03000	Analogue input
170AAI14000	Distributed analogue input
170AAO92100	4 analogue outputs, 4 to 20 mA
170ANR12090	6 analogue inputs and 4 outputs, without terminal block

The prefix letters

Code	Meaning
ADM	Discrete mixed, inputs and outputs
ADI	Discrete input
ADO	Discrete output
AAI	Analogue input
AAO	Analogue output
ANR	Analogue mixed
ENT, FNT, INT, DNT, PNT	Communication adapters by network

Conformal coated versions exist across the range

Schneider produced conformal coating variants of most Momentum parts, including the Ethernet, FIPIO and Interbus communication adapters and the M1 and M1E processor adapters.

Standard and coated versions are different part numbers and look identical.

Relevant in New Zealand for coastal sites, wastewater and any plant with corrosive atmosphere. If the existing part is a coated version, the standard one is not a like-for-like replacement, and it will fail years earlier without anyone connecting the two events.

Same principle as the ABB XC modules and the M340 H versions covered elsewhere on this site.

What to send us

Which layer you need. Base, adapter, option adapter, or a complete node.

The full reference off each part. They are separately labelled.

The network, if you need a communication adapter.

Whether the part is conformal coated.

Whether the base needs a terminal block.

For a processor adapter, the port combination and whether it runs Unity or Concept.

What we can supply

I/O bases. Discrete, analogue and mixed, across the 170A and 171C ranges.

Communication adapters. Ethernet, FIPIO, Interbus, PROFIBUS DP and Modbus Plus, including redundant versions.

Processor adapters. M1 and M1E in both Concept and Unity generations.

Option adapters, terminal blocks and power strips. The small parts that stop a job.

Momentum is long discontinued, so this is new old stock, surplus and tested used.

Momentum is worth holding spares for

A specific argument for this platform.

Because the adapter and the base separate, a spare adapter covers every node using that network. One 170ENT11001 on the shelf protects every Ethernet Momentum drop on the site, whatever I/O base each one carries.

That is an unusually cheap insurance policy for a distributed system, and it is the single most useful thing to know about maintaining Momentum.

We buy Modicon Momentum

Momentum holds value, and the adapters in particular are worth real money to plants still running the platform. If you are migrating, keep the adapters separate from the bases, because they sell separately. See Sell To Us.

Send us your references

Tell us which layer failed. An adapter swap leaves the field wiring alone and a base swap does not, and they are very different quotes. Quotes in NZD including GST.

Request a quote

Industech is an independent supplier of new, surplus and used industrial automation equipment. We are not an authorised distributor of, approved by, sanctioned by, or affiliated with Schneider Electric. Schneider Electric, Modicon, Momentum, Concept, ProWORX, Unity Pro and Modbus Plus are trademarks of Schneider Electric. All trademarks, brand names and references are the property of their respective owners and are used here for identification purposes only.