Comtech EF Data LBC-4000 Installation And Operation Manual page 114

If several devices share an EIA-485 bus, note that the LBC-4000 requires three addresses, and the device numbering should be spaced
accordingly.
The Controller sends a packet with the address of a Target – the destination of the packet. When the Target responds,
the address used is the same address, to indicate to the Controller the source of the packet. The Controller does not
have its own address.
Serial Interface Operation
LBC-4000 L-Band Up/Down Converter System
8–4
Revision 6
MN-LBC-4000