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Yokogawa A2MMM843-SS1130 16-Channel Analog / Digital I/O Module with HART Item NO.: 2932305

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Product Name	Yokogawa A2MMM843-SS1130 16-Channel Analog / Digital I/O Module with HART
Item NO.	2932305
Weight	0.1 kg = 0.2205 lb = 3.5274 oz
Category	YOKOGAWA
Brand	YOKOGAWA
Creation Time	2026-11-13

YokogawaN-IO MULTI-SIGNAL

Yokogawa A2MMM843-SS113016-Channel Analog / Digital I/O Module with HART

Product Summary

Yokogawa A2MMM843-SS1130 is a 16-channel isolated N-IO module whose channels can be assigned as analog input, analog output, digital input or digital output. The analog paths support HART communication, allowing one module type to host a carefully engineered mixture of field signal functions.

The SS1130 suffix of A2MMM843-SS1130 identifies the standard analog I/O function, standard digital I/O function, fixed design code, explosion-protected construction, and G3 environmental treatment with the -40 to 70 °C operating range. Those codes describe one complete hardware variant rather than optional software labels.

Within A2MMM843-SS1130, each channel is isolated and its function is selected through engineering. HART variables can be used with analog channels, while on-demand communication can be routed through the supported plant resource management environment.

Yokogawa A2MMM843-SS1130 HART process data flow from the official N-IO manual

Technical Details

Specification	A2MMM843-SS1130
Brand	Yokogawa
Product Name	16-Channel Analog / Digital I/O Module with HART
Country	Not specified
Platform	N-IO
Channel count	16 isolated channels
Selectable functions	Analog input, analog output, digital input or digital output
Analog signal	4 to 20 mA DC
HART communication	Available for supported analog channels
Digital input	Dry-contact input arrangement
Digital output	24 V DC transistor output arrangement
Isolation	Channel-to-system and channel-to-channel
Explosion protection	Included by suffix code
Environmental treatment	G3
Operating temperature code	-40 to 70 °C
Engineering requirement	Per-channel function assignment

Monitoring and Control

A2MMM843-SS1130 brings measurement, command and discrete state functions into one isolated channel set; the engineering database determines what each physical channel means.

Analog measurement

Channels assigned as analog inputs acquire 4 to 20 mA process values and can expose supported HART variables alongside the primary signal.

Analog actuation

Channels assigned as analog outputs send 4 to 20 mA commands to compatible field devices, with external loop conditions retained in the cabinet design.

Discrete state control

Remaining channels can be assigned as contact inputs or transistor outputs, letting one N-IO module handle a mixed field bundle without changing hardware type.

Communication and Connectivity

The A2MMM843-SS1130 signal path connects channel-level HART data, on-demand device communication and the N-IO node communication structure.

HART variable access

The field control station reads HART variables from the module I/O image while ordinary control blocks continue to use the primary process values.

On-demand communication

Supported PRM access can address field devices without making the control application responsible for every maintenance transaction.

N-IO node link

The module connects through its N-IO unit and node interface; it does not provide a standalone plant-network connector on the front module body.

Customer Questions

Q01HART polling is slow on A2MMM843-SS1130; which communication load should be reviewed first?

With A2MMM843-SS1130, review the number of HART devices, polling method, PRM on-demand traffic, field wiring quality and refresh expectations before treating the module as faulty.

Q02Why does A2MMM843-SS1130 accept one channel type but reject another in engineering?

For A2MMM843-SS1130, confirm the exact channel capability, selected analog/digital direction, node firmware and project software revision. A mixed-I/O module still enforces valid function combinations.

Q03An A2MMM843-SS1130 analog output stays at its fallback state after download; what should be compared?

For A2MMM843-SS1130, compare the channel direction, output range, downloaded point assignment, application command and field loop supply before treating the output circuit as failed.

Q04Why can one A2MMM843-SS1130 channel disturb only its own loop?

A2MMM843-SS1130 uses isolated channels, so a polarity, supply or field-device fault can remain local to one point. Check that loop before investigating the entire N-IO node.

Q05How can PRM traffic be separated from control-data delay on A2MMM843-SS1130?

With A2MMM843-SS1130, compare the primary process update with HART or PRM response. Normal control values with slow device variables point to the HART communication path rather than the channel conversion path.

Q06How can channel identity be protected when replacing A2MMM843-SS1130?

Export the A2MMM843-SS1130 channel assignment, tags, ranges, HART devices and safe states before removal. Reinstalling identical hardware does not recreate a missing engineering database.

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