Siemens ESM User Manual
Page 84
Technical Specifications
Industrial Ethernet OSM/ESM
80
C79000-Z8976-C068-10
Permitted Cable Lengths
FO cable length between two OSMs
For OSM ITP62, OSM ITP53, OSM
TP62, OSM TP22:
0-3000 m (62.5/125
µm glass fiber; 1
dB/km at 1300 nm; 600 MHz*km; 6 dB
max. permitted FO cable attenuation at 3
dB link power margin)
0-3000 m (50/125
µm glass fiber; 1
dB/km at 1300 nm; 600 MHz*km; 6 dB
max. permitted FO cable attenuation at 3
dB link power margin)
For OSM ITP62-LD:
0-26000 m (10/125
µm single mode
fiber; 0,5 dB/km at 1300 nm; 13 dB max.
permitted FO cable attenuation at 2 dB
link power margin)
ITP cable length
0-100 m
TP cable length
0-10 m with TP cord
up to 100 m total length when using the
FastConnect cabling system
Length of the ITP XP Standard Cable
9/9 at standby-sync port
0-40 m
Cascading Depth
Bus/star structure
Any (only depending on signal
propagation time)
Redundant ring
50 (for reconfiguration time < 0.3 s)
Switching Properties of OSM/ESM
Number of learnable addresses
Up to 7000
Aging time
40s (default)
Latency
4
µs (measured at 75% load between
two ports operating at 100 Mbps)
Switching procedure
Store and forward