DEIF AGC 150 Stand-alone

Compatibility

Documented AGC 150 Modbus server

DEIF publishes an exact-model Modbus server manual for TCP and serial connections plus a versioned server table. Edge can act as a read-only Modbus client after the installed software version and current table are matched.

AGC 150 Stand-alone generator controller, datasheet 4921240619-F1 and Modbus server user manual 4189341435-D. This is the non-synchronising stand-alone variant, not AGC 150 Hybrid, ATS, Engine drive or an ASC controller. Use only read functions and the current DEIF table. Do not issue start, stop, breaker, mode, parameter or I/O writes.

Connect it with

• 
  Modbus Interface ZMB-3X
  From €399 ex VAT Configure Modbus Interface
• 
  Gateway ZGW-20
  From €899 ex VAT Configure Gateway

Models

Specifications

The Modbus manual documents both reads and writes. Monitoring clients must use an allowlist of read-only table entries rather than exposing the complete server surface.^2, 3

Application

One genset in non-synchronising island, AMF or open-transition load take-over operation²

Modbus transports

Modbus TCP server and serial Modbus server on configured communications ports³

Read functions

Coils, discrete inputs, holding registers and input registers are documented; configurable read-only input-register area is available³

Write boundary

Single and multiple coil/register writes are documented by DEIF but excluded from this guide³

Communications

Ethernet, USB, two RS-485 ports and two CAN interfaces²

Supply and environment

8 to 36 V DC continuous; -40 to +70 °C operating range; IP65 front when installed with the supplied gasket²

Interface

Documented measurements and integration boundaries for AGC 150 Stand-alone.

• Generator voltage, current, frequency, active power, reactive power, apparent power and power factor from current table entries.
• Engine speed, run hours, battery voltage, oil pressure, coolant temperature and available ECU observations.
• Controller mode, generator and mains status, breaker feedback, alarms and communication status as read-only observations.
• Parameters, coils, outputs, start, stop and breaker commands exist in the broader server interface but remain outside this guide.

Setup

1. Confirm the controller label says AGC 150 Stand-alone and record its application, software version and DEIF configuration archive.

   Obtain the current English Modbus server table from the cited documentation page.

2. Have the generator engineer enable and assign one monitoring interface.

   Record TCP or serial settings and preserve the control owner's network and breaker design.

3. Create a small read-only allowlist from the exact table revision.

   Exclude all write functions, coils or registers that can change mode, start state, breaker state, parameters or physical outputs.

4. Read controller identity, operating mode and a small measurement set.

   Compare generator voltage, frequency, power and run state with the AGC display in a safe operating state.

5. Test loss and restoration of communications without changing controller operation.

   A successful read proves the data path, not physical generator or breaker action.

Common questions

Is AGC 150 Stand-alone a synchronising controller?

No. DEIF describes this variant as a non-synchronising controller for one genset. Other AGC 150 variants need their own exact documentation.²

Why is there no worked register read here?

DEIF publishes the current address table as a separate versioned spreadsheet. This guide avoids freezing one register without binding the installed software and table revision together.^1, 3

Can Edge use Modbus to start the genset?

The protocol documents write functions, but this guide deliberately limits Edge to monitoring. Generator and breaker control require a separate engineered and physically witnessed acceptance process.^2, 3