Siemens SIMATIC NET PROFIBUS Owner's Manual page 219

Uses
The SIENOPYR duplex marine fiber-optic able is intended for fixed installation on
ships and offshore facilities in all enclosed spaces and on open decks. It is suitable
for connecting optical ports operating at the wavelengths of 850 nm and 1300 nm.
Ordering
Appendix I-2 lists an address from which this cable can be ordered.
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Passive Components for Electrical Networks
7-23