Simrad AP26 Manual page 70

Figure 3-16 Robnet2, SimNet and Roblink network
Notes !
1. Maximum total length of SimNet cable is 60 m (196 ft.)
2. It is not necessary to connect all autopilot control units to
3. AT15 is a NMEA0183/SimNet converter for the IS15
4. AT44 is a SimNet interface that is supplied with CX44 and
20222147A
excluding the 30 m (99 ft.) of masthead cable.
SimNet for data sharing. However, if you want to have full
redundancy and SimNet control, e.g. select sources, you
have to connect the actual unit to SimNet.
Instrument system. IS15 makes no load on SimNet.
CX54.
Installation
69