General; Overview Nodal Function - Siemens SIPLUS RIC IEC on S7 Manual

1. General

This manual describes the functionality of the AddOn function blocks FB161 and FB166. They allow the
low effort realization of an IEC nod with the software SIPLUS RIC Application IEC on S7 V1.5.
The present description has to be perceived as a supplement of the SIPLUS RIC IEC on S7 manual V1.5.
You'll receive the blocks in the form of a SIMATIC block library.

2. Overview Nodal function

The nodal function is a configuration with a SIPLUS RIC IEC on S7 station connected between two IEC
telecontrol equipments for enabling the transmission of information via the telecontrol protocols IEC101
resp. IEC104.
Depending on the case of operation classical control center / substation interlinkings as well as intercon-
nections between several substations can be carried out.
In practice the classical control center / substation link with exchange of information between one or sev-
eral subordinated RTUs and one control center will be the most used application. Therefore the instruc-
tions and figures in the subsequent description apply to this configuration.
In this case SIPLUS RIC IEC on S7 has IEC-Slave function compared to the control center and IEC-
Master function compared to the subordinated RTU.
The nodal blocks support the easy and extensively non parameterized projection of the information to be
transferred.
The following blocks are available:
FB161 for the control direction
subordinated RTU  SIPLUS RIC IEC on S7  Control center
FB166 for the monitoring direction
Control center  SIPLUS RIC IEC on S7  subordinated RTU
In control direction the blocks are designed for realization of a "transparent" node:
- for direct passing of information (exception: time stamp, ASDU address conversion).
- automatically update of the image (created during operation)
- In order to transmit measured values not with each change of a bit a global programmable
threshold for slowdown of the measurands was added.
as well as user configurable by assigning of a parameter data block. This implicates the essential fea-
tures:
- defining the information which has to be transferred (defined quantity structure)
- individual conversion of the information object addresses
- parameterizable threshold for measured values per information
- possibility for image access (diagnosis / further processing)
Interrogation and disturbances are processed out of the image.
SIPLUS RIC IEC on S7 V1.5
Functional description
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