Construction and hardware
characteristics - REC 561
ABB Network Partner AB
1MRK 580 148-XEN
Page 2 - 31
Version 1.0-00
Fig. 3 Internal hardware structure
2.3 Serial communication
module (SCM)
The serial communication modules are placed in slots at the rear part of
the Main processing module. One or two modules can be applied on the
Main processing module (see Fig. 9). One slot is intended for LON com-
munication and the other for SPA communication. The serial communica-
tion modules enable the terminal to be a part of a Substation Automation
system (LON or SPA), and/or a Station Monitoring System (SPA).
There are four different types of SCM:s
The modules can be identified with a number on the label on the module.
The number can be found in Order data sheet REC 561 (1MRK 580 149-
XEN). The modules are mounted on position X13 (SPA) and X15 (LON)
(see Fig. 9).
SPM
TRM
(S2)
BOM
(S14)
E
C
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