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Indactic 33/41

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The Indactic 33/41 protocol was developed by the BBC company (ABB) at the beginning of the eighties. It found high resonance in the energy industry for the automation of transformer stations enabling the communication between a control station and several RTUs. It is often referred to as "Indactic 33", so it is easily confused with the Indactic 2033.

Indactic 2033 is derived from Indactic 33/41.

Data transmission is based on the half duplex communication mode. The control station continuously sends synchronization signals even when there is no data ready to be dispatched. The RTUs on the other hand only respond to an explicit request from the control station. Up to 15 RTUs can be connected to a single communication line.

Data is encoded in 16-bit words with 8-bit use data which together make up a telegram.

ISO/OSI Model

7 Application Layer Indactic 2033 Application Layer
6 Presentation Layer n/a
5 Session Layer n/a
4 Transport Layer n/a
3 Network Layer n/a
2 Link Layer n/a
1 Physical Layer RS232 / V.24 (PCM)

Supported Information Types

Control Direction Double Command
Setpoint [8 bit]
Monitoring Direction Single indication [1 Bit]
Single indication [1 Bit] with time tag
Measured value [8 bit]
Counter value BCD [6 digits]

Protocol Features

Physical Layer PCM
pseudo halfduplex
baud rates: 50, 100, 200, 600, 1200
Application Layer on-demand transmission of static signals such as single indications and analogs
spontaneous transmission of single indications with time tag
direct command transmission (without SBO)
clock synchronization
Address Space up to 15 RTUs connected to one line
single indications: up to 15 files with 128 points each
analogs: up to 8 files with 16 points each
counter values: up to 4 files with 16 points each
commands: up to 15 files with 128 points each

Implemented Protocol Stacks

Indactic 33/41, 2033, MasterIndactic 33/41, 2033, Slave

Applicable Products

ipConvLiteipConvLiteinexpensive protocol converter for standardized application
start price 1.800,- €
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product/ipConvLite/en/ipConvLite_EN.pdf
ipConvPBSipConvPBSUniversal protocol converter with integrated PROFIBUS-DP, slave interface
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ipConvPBMipConvPBMUniversal protocol converter with integrated PROFIBUS-DP, master interface
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ipConvPNMipConvPNMUniversal protocol converter with integrated PROFINET-IO, master interface
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ipConvPNSipConvPNSUniversal protocol converter with integrated PROFINET-IO, slave interface
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ipConvipConvUniversal protocol converter for highest degree of flexibility
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product/ipConv/en/ipConv_en.pdf

References

Project CFEProject CFE
Details...
MexicoipConv Conitel-2020, Slave / DNP V3.00, Slave / DNP V3.00, Master / Harris-5000/6000, Slave / Recon, Slave / Indactic 33/41, 2033, Slave / Fuji, Slave / XMAT, Master /
Power Plants Hinterrhein, SwitzerlandPower Plants Hinterrhein, Switzerland
Details...
SwitzerlandipConv IEC 60870-5-104, Slave / Indactic 33/41, 2033, Master /
ABBIranABBIran
Details...
IranipConv Indactic 33/41, 2033, Slave / IEC 60870-5-101, Master /
ISKIISKI
Details...
TurkeyipConv Indactic 33/41, 2033, Slave / Modbus, Master /
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