GE MDS SD4A Technical Manual page 24

16
Packet With MAC is the recommended method of operation when both
serial ports are used to pass payload data if there are two hosts (e.g., Port
Sharing with multiple host case). If there is a single host polling all units,
packet or transparent mode is the preferred option (depending on
whether encryption is required or not) even if there are two RTUs con-
nected to a Remote radio.
Device Settings Screen
Radio Mode: Packet w/MAC
HOST COMPUTER
(Host A)
REMOTE RADIO
(One of several possible sites)
SERIAL RTU
SERIAL RTU
Figure 10. Serial Remotes with Two Serial Ports
SD Series Technical Manual
MASTER RADIO
To Ethernet Port
TCP Ethernet
SERIAL RTU
MDS 05-4846A01, Rev. F
REMOTE RADIO
(One of several possible sites)
SERIAL RTU