22.2.12.3 Technical data
SEMOD117454-1 v1
M12589-1 v4
Table 1035:SLM – LON port
Quantity Range or value
Optical connector Glass fiber: type ST
Plastic fiber: type HFBR snap-in
Fiber, optical budget Glass fiber: 11 dB (1000m/3000 ft typically *)
Plastic fiber: 7 dB (10m/35ft typically *)
Fiber diameter
Glass fiber: 62.5/125 mm
Plastic fiber: 1 mm
*) depending on optical budget calculation
SEMOD117441-2 v5
Table 1036:SLM – SPA/IEC 60870-5-103/DNP3 port
Quantity Range or value
Optical connector Glass fiber: type ST
Plastic fiber: type HFBR snap-in
Fiber, optical budget Glass fiber: 11 dB (1000m/3000ft m typically *)
Plastic fiber: 7 dB (25m/80ft m typically *)
Fiber diameter
Glass fiber: 62.5/125 mm
Plastic fiber: 1 mm
*) depending on optical budget calculation
22.2.13 Galvanic RS485 communication module
SEMOD174899-1 v1
22.2.13.1 Introduction
SEMOD158664-5 v3
The Galvanic RS485 communication module (RS485) is used for DNP3.0 and IEC 60870-5-103
communication. The module has one RS485 communication port. The RS485 is a balanced serial
communication that can be used either in 2-wire or 4-wire connections. A 2-wire connection uses
the same signal for RX and TX and is a multidrop communication with no dedicated Master or
slave. This variant requires however a control of the output. The 4-wire connection has separated
signals for RX and TX multidrop communication with a dedicated Master and the rest are slaves.
No special control signal is needed in this case.
22.2.13.2 Design
SEMOD158668-1 v1
SEMOD158670-4 v2
The RS485 is a PMC card and it is factory mounted as a mezzanine card on the NUM module.
RS485 connector pinouts
SEMOD158670-10 v1
The arrangement for the pins in the RS485 connector (figure
661) are presented in table 1037:
1MRK 502 066-UUS B Section 22
IED hardware
1321
Technical manual
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