16-channel Sink Type Isolated Output Module With Isolated Communication line. The FR-2057iT has 16-channel isolated sink output. The FR-2000 I/O module has an FRnet interface. The users can daisy chain several FR-2000 modules together. Via FRnet, the FR-2000 modules can extend the remote I/O control of PC, PAC and PLC easily. Further information about the networking of FR-2053iT/2057iT; refer to literature related to I-7188EF, I-8172W, FRB-100/20..