IEC 60870-5-101

IEC 60870-5-104

 

With the IEC 60870-5 protocols, the PCD can act as remote unit (RTU) for telecontrol applications like Power Plants controls, Energy, Gas and Water distribution. Because of its high reliability and efficiency, these protocols are also involved in many other industrial application fields including pumping stations, waste water treatment, tunnel supervision and even remote building control. Both companion standards IEC 60870-5-101 (serial lines) and IEC 60870-5-104 (TCP/IP) are available and can even run in the same system.

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The IEC 60870-5-104 can also be used over GPRS modem, for instance with the Wide Area Controllers. This configuration is particularly interesting for pump stations.

 

 

The driver is delivered in form of an Fbox library. Fboxes include not only the data points definition but all related mechanisms like:
- PCD clock settings
- General interrogation, global or groups
- Transmission of events on value change
- Pulse commands
- Value conversion

 

 

IL

An FB call is also available to add user specific messages directly in the event buffer. This allows you to program your own event detection and stamping, for instance in a subsystem connected over S-Bus.

In case of large configuration, the data point definition is made in an Excel file and directly compiled and liked with the PCD program. This method ensures a good overview of the configuration and efficient edition tools. The same file can include different standard configurations (e.g. A, B, C, up to Z) that can be quickly selected and recompiled.

On request, the Interoperability Checklist is available for each of them. Here is a short list of the supported features.

Feature

101

104

Public line modem / ISDN / GSM

NA

PPP over GPRS (PCD.WAC)

NA

Baudrates 1200 to 115kbds

NA

Balanced transmission (Full duplex)

Unbalanced transmission (Master-Slave)

NA

Redundant connections (not simultaneous)

Number of Connections per group
(per redundant driver)

NA

2

Maximum number of independent drivers
(simple or redundant)

1

10

Maximum number of data points (NT-Systems).

3000

4000

Event buffer size (adjustable)

100,300
1000

100,300
1000,10’000

Process information in monitor direction, with or without timetag:
- Single-point information
- Double-point information
- Step position information
- Bitstring of 32 bit
- Measured value, normalized value (relative float)
- Scaled value (integer 16bits)
- Measured value, short floating point value
- Integrated totals (counters)

Format conversion included
(Integer, Float, Normalized)

Sequence of elements and objects

Command transmission, Direct command

Command transmission, Activation confirmation

Select-Execute sequence

 1)

 1)

Process information in control direction:
- Single command (persistent or pulse)
- Double command  (persistent or pulse)
- Regulating step command
- Bitstring of 32 bit
- Set point command, normalized value
- Set point command, scaled value
- Set point command, short floating point value

Format conversion included
(Integer, Float, Normalized)

Clock Synchronization

 2)

 2)

General Interrogation, General or Group

Counter Interrogation, General or Group

Counter Freeze / Counter Reset

 3)

 3)

Read procedure

File transfer

1) The Select-Execute sequence is supported but cannot be made mandatory and does not time out.
2) Clock synchronization is supported but millisecond is not warrantee in all cases.
3) Depending on user application counter reset may not be possible with this command

Prices: See price list IEC 60870-5-101 and IEC 60870-5-104

 

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Engiby / 14.07.2011