Chapter 2 Installation
36
2.6 Chassis Cascade
The FRM220 chassis may be cascaded in such a manner that only one single IP address is required to
manage up to 10 chassis in a single location. The connection diagram is shown below. Each chassis is assigned a
unique ID starting at zero for the master chassis and incrementing for each cascaded chassis, up to an ID of nine.
The "out" of the parent chassis connects to the "in" of the slave using any standard UTP cable with RJ-45
connectors.
Figure 2-7 Cascade Ports Connections and ID assignment
Pin No. Signal Definition Direction
(Master)
Direction
(Slave)
IN OUT
IN OUT
IN OUT
IN OUT
Chassis ID = 0
(Master)
Chassis ID = 1
(Slave)
Chassis ID = 2
(Slave)
Chassis ID = 9
(Slave)
9
2
0
1
1 Tx+ Transmit positive signal Out In
2 Tx- Transmit negative signal Out In
3 Rx+ Receive positive signal In Out
4 Chain+ Chain positive signal Out In
5 NC No connection
6 Rx- Receive negative signal In Out
7 Chain- Chain negative signal Out In
8 NC No connection
Figure 2-8 Cascade Ports Detailed Pin Assignment
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