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Indactic 33/41 ISO/OSI Model
Supported Information Types
Protocol Features
Implemented Protocol Stacks
Applicable Products
References
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
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| 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
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| 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
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Implemented Protocol Stacks
Applicable Products
 | ipConvLite | inexpensive protocol converter for standardized application
start price 2.500,- €
Details...
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 | ipConvPS | Universal protocol converter with integrated Profibus-DP, Slave interface
Details...
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| ipConvPM | Universal protocol converter with integrated Profibus-DP, Master interface
Details...
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 | ipConv | Universal protocol converter for highest degree of flexibility
Details...
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References
 | Project CFE
Details...
| Mexico | ipConv | 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 / |
 | Manny Canjar
Details...
| Columbia | ipConv | IEC 60870-5-101, Slave / IEC 60870-5-104, Master / IEC 60870-5-104, Slave / Indactic 33/41, 2033, Master / |
 | Power Plants Hinterrhein, Switzerland
Details...
| Switzerland | ipConv | IEC 60870-5-104, Slave / Indactic 33/41, 2033, Master / |
 | ABBIran
Details...
| Iran | ipConv | Indactic 33/41, 2033, Slave / IEC 60870-5-101, Master / |
 | ISKI
Details...
| Turkey | ipConv | Indactic 33/41, 2033, Slave / Modbus, Master / |
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