Communication Ports; Design - ABB Relion 650 Series Communication Protocol Manual

Section 3
SPA operation principle
3.1.3

Communication ports

The serial communication module (SLM) is a mezzanine module placed on the numeric
processing module (NUM). It is used for LON, SPA, IEC 60870-5-103 and DNP communication.
There are two types of IO connectors: snap-in connector for plastic fibre cables and ST/
bayonet connector for glass fibre cables. The SLM can be equipped with either type or
connector or with a combination of both types of connectors. This is identified with a tag.
Connect the incoming optical fibre to the RX receiver input, and the outgoing optical fibre to
the TX transmitter output. Pay special attention to instructions concerning handling and
connection of fibre cables.
For setting the transfer rate (baud rate) and slave number, please refer to the Application
manual and Commissioning manual respectively.
3.2

Design

Using the rear SPA port for either local or remote communication with a PC requires the
following equipment:
• Optical fibres
• Opto/electrical converter for the PC
• PC
The software needed in the PC, either local or remote, is PCM600.
When communicating between the local HMI and a PC, the only hardware required is a front-
connection cable. Note! SPA cannot be used from LHMI front, except for using "FSTACCS", that
is, Field Service Tool Access.
16
SPA cannot be used with PCM600.
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Communication protocol manual