ABB D11 and D13 Modbus

Compatibility

Compatible through Modbus RTU

The manufacturer documents local measurement reads that can be configured in an Edge Modbus client.

D11 15 40 Modbus (D111540RS485), D11 15-M 40 Modbus (D1115M40RS485) and D13 15-M 65 Modbus (D1315M65RS485). Pulse-only and M-Bus order codes are excluded.

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

D11 and D13 solve different installation sizes while sharing the same communications approach. ABB’s ordering table distinguishes the one-module, single-phase D11 at 40 A from the three-module, three-phase D13 at 65 A. Both are direct-connected arrangements in these order codes, so a CT ratio should not be added to their returned current or energy.³

D11 selected variants

Single-phase, direct-connected 40 A; D111540RS485 or D1115M40RS485³

D13 selected variant

Three-phase, direct-connected 65 A; D1315M65RS485³

Communication terminals

A = data minus, B = data plus, C = common on the RS-485 version²

Measurement function

FC03 Read Holding Registers¹

Import active energy

0x5000, four registers, unsigned64, 0.01 kWh¹

Invalid unsigned value

All bits one across the complete value; reject before scaling¹

Interface

Documented measurements and integration boundaries for D11 and D13 Modbus.

• Import active energy at 0x5000, unsigned64 in 0.01 kWh.
• Export active energy and net energy, with signedness determined by each table entry.
• Voltage at 0x5B00 in 0.1 V and current values with their own scales.
• Model-dependent phase measurements; unsupported values have documented invalid markers rather than meaningful zeroes.

Setup

1. Check the complete order code

   Confirm the RS485 suffix, phase configuration and direct-connected current rating. Match MID approval to the exact M variant rather than the family name.

2. Connect the documented serial terminals

   Use A data minus, B data plus and C common as identified in the installation manual. Match the installed address and serial framing to the Edge client. Do not infer polarity from another manufacturer’s A/B labels.

3. Read one complete energy counter

   Read FC03 at hexadecimal 0x5000, decimal 20480, quantity 4. These are literal map addresses, not 4xxxx display references. Decode all eight bytes as unsigned64 with the most significant byte first.

4. Reject unavailable values before scaling

   For an unsigned quantity, all-ones words mean invalid. Signed quantities use their maximum positive value as the invalid marker. Keep unavailable separate from zero and from an enormous consumption total.

5. Check an interval against the meter

   Multiply the integer energy value by 0.01 kWh. Compare with the local import-energy display, then verify an interval delta under a known load. Preserve import, export and net-counter meaning rather than combining them implicitly.