Siemens SIMATIC NET System Manual page 166

SCALANCE network components
4.5 SCALANCE X Industrial Ethernet Switches
Type
SFP991-1LD (C)
SFP991-1LH+
SFP991-1ELH200
The SFP plug-in transceiver (100 Mbps) cannot be operated in SFP+ slots.
Pluggable transceivers with the supplement (C) in the type name have varnished printed circuit boards
(conformal coating).
Note
You cannot use the plug-in transceiver SFP (100 Mbps) with the following devices:
• Devices with the suffix "G" in the type designation
• Devices with combo ports
SFP991 interfaces (100 Mbps)
Pluggable transceiver
SFP991-1
SFP991-1 (C)
SFP991-1LD
SFP991-1LD (C)
SFP991-1LH+
SFP991-1ELH200
* With a cable cross-section of 50/125 μm or 62.5/125 μm; attenuation 1 dB/km at 1310 nm;
1200 MHz * km
** With a cable cross-section of 9/125 μm; attenuation ≤ 0.5 dB/km at 1310 nm
Note
Slots for pluggable transceivers of the product group SFP991
The pluggable transceivers SFP991 with a transmission rate of 100 Mbps cannot be used for
devices with the letter "G" in the type designation (Gigabit Ethernet) or in the slots for
pluggable transceivers of the product groups SFP992 (1000 Mbps) and SFP993 (10 Gbps).
When inserting an SFP991 into the wrong slot, the device detects the incorrect usage and
reports the error.
166
Property
1 x 100 Mbps LC port optical for glass FO cable
(single mode) up to max. 26 km, varnished
1 x 100 Mbps LC port optical for glass FO cable
(single mode) up to max. 70 km
1 x 100 Mbps LC port optical for glass FO cable
(single mode) up to max. 200 km
Twisted pair
100 Mbps
-
-
-
-
Fiber-optic cables
100 Mbps
1x LC, multimode
1x LC, single-mode
1x LC, single-mode
1x LC, single-mode
System Manual, 09/2019, C79000-G8976-C242-10
Article number
6GK5991-1AF00-8FA0
6GK5991-1AE00-8AA0
6GK5991-1AE30-8AA0
Max. segment length / km
5*
26**
70
200
Industrial Ethernet