Allowable Standard I/O Link Extender Cable Signal Loss - Honeywell Series 8 I/O User Manual

9. Series 8 I/O Link Fiber Optic Extenders (FOE)
9.4. Defining the Fiber Optic topology
Link A and B cable length differences
The maximum difference in fiber optic cable length between Link A and Link B must be
less than 500 meters (1640 feet) to limit the communication delay difference between
Link A and Link B.

Allowable standard I/O Link extender cable signal loss

The Standard I/O Link Extender cable:

Must have a total signal loss equal to or less than -5.5 dB at a wavelength of 850
nanometers.

Fiber loss is measured at 22degrees C ±3 degrees and is usually stated as a mean
value.

Individual fiber losses may be as much as 25% greater than the mean.
254 Series 8 I/O User's Guide
Honeywell
R500
April 2017