Trane RTWA 70-125 TON - Manual (Page 78)

78 RLC-SVD03A-EN
Module Power and Miscellaneous I/O
Interprocessor Communication Bridge Module (IPCB) (1U7)
The IPCB provides an extension of the IPC link to the Remote Clear Language
Display. See
Figure 23 It prevents “crashes” of the IPC and UCM if the link to
the RCLD is shorted or misapplied. The IPCB receives and retransmits data to
and from local to remote links. Therefore the data is available on either link.
SW1 should be set per the label on the IPCB. LEDs RXA, TXA, RXB and TXB
should be constantly blinking, synchronously, in normal operation.
Figure 23 IPCB Nominal Terminal Voltages


 
  
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