Senstar Corporation LM100 User Manual

In the standard Silver Network setup, a point to point loop configuration is used for network 
communications. 

 shows the network connections for the RS-422 and fiber optic 

communication options. 

 illustrates an RS-422 based Silver Network and 

shows a fiber optic based Silver Network. Silver Network’s using Ethernet communications use a 
star configuration. 

illustrates an Ethernet based Silver Network (Star configuration).     

The PoE NIC typically receives power over its Ethernet connection. It 
provides power to the gateway through T6, the gateway power input. 
The gateway then supplies power to the NIC through the expansion 
header. If the PoE NIC does not receive power over its Ethernet 
connection, the gateway must have another source of DC power 
connected to T6.

Figure 40: Silver Network data connections (loop configurations)

Figure 41: Silver Network RS-422 wiring diagram

RS-422

Fiber Optic

(use single point

grounding, connect one

end of cable shield; trim
the other end and leave
it disconnected)

1

1

2

2

3

3

4

4 5

5

RX

B+

RX

B-

G

N

D

TX

B+

TX

B-

RX

A+

RX

A-

G

N

D

TX

A+

TX

A-

1

1

2

2

3

3

4

4 5

5

1 2 3 4 5

1 2 3 4 5

1

1

2

2

3

3

4

4 5

5

1 2 3 4 5

1 2 3 4 5

1 2 3 4 5

1 2 3 4 5

RX

B+

RX

B-

G

N

D

TX

B+

TX

B-

RX

A+

RX

A-

G

N

D

TX

A+

TX

A-

RX

B+

RX

B-

G

N

D

TX

B+

TX

B-

RX

A+

RX

A-

G

N

D

TX

A+

TX

A-

RX

A+

RX

A-

G

N

D

TX

A+

TX

A-

1 2 3 4 5

RX

B+

RX

B-

G

N

D

TX

B+

TX

B-

1 2 3 4 5

maximum 60 devices

max. distance between devices = 1.2 km (3/4 mile)

first device

second device

last device

shield

shield

shield

shield

shield

shield

NOTE: Use single point grounding - connect one end of the cable shield, trim the other end and leave it disconnected.

Network Interface Unit

lightning

arrestors

lightning

arrestors

to Network Manager