ABB Relion 670 Series Applications Manual page 542

Section 20
Station communication
20.4.2.2 Application
The IED provides two function blocks enabling several IEDs to send and receive signals via the
interbay bus. The sending function block, MULTICMDSND, takes 16 binary inputs. LON enables
these to be transmitted to the equivalent receiving function block, MULTICMDRCV, which has 16
binary outputs.
20.4.2.3 Setting guidelines
Settings
The parameters for the multiple command function are set via PCM600.
Mode setting sets the outputs to either a Steady or Pulsed mode.
The
20.5 SPA communication protocol
20.5.1 Application
SPA communication protocol is an alternative to IEC 60870-5-103, and they use the same rear
communication port.
When communicating with a PC connected to the utility substation LAN via WAN and the utility
office LAN (see Figure 243), and when using the rear optical Ethernet port, the only hardware
required for a station monitoring system is:
• Optical fibers from the IED to the utility substation LAN
• PC connected to the utility office LAN
Remote
monitoring
ANSI05000715 V4 EN-US
Figure 243: SPA communication structure for a remote monitoring system via a substation
SPA communication is mainly used for the Station Monitoring System. It can include different IEDs
with remote communication possibilities. Connection to a PC can be made directly (if the PC is
located in the substation), via a telephone modem through a telephone network with ITU (former
CCITT) characteristics or via a LAN/WAN connection.
536
Utility LAN
LAN, WAN and utility LAN
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WAN
IED IED
1MRK 511 401-UUS F
Substation LAN
IED
ANSI05000715-4-en.vsd
Bay control REC670
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