Cisco Cisco Prisma II EDR Receiver Guia Da Instalação
2-14
Installation
78-713378-01 Rev C
Master/Slave Connections
Master/Slave Operation
The Prisma II Reverse Receiver ships from the factory configured as a "Master". LCI,
TNCS, or the ICIM can be used to reconfigure the module as a “Slave.” The Prisma
II Chassis allows for local hard-wired redundancy by using the ALARM IN and
ALARM OUT connectors located on the chassis. You can configure a pair of
modules so that if the master fails, the slave will take over.
Notes:
•
•
The ALARM RELAYS are shown in their NORMAL (non-alarmed) state.
When a CRITICAL FAULT occurs, the relay changes to the open state.
•
Then ENABLE CONTROL is shown in its OFF position. LCI, TNCS, or the
ICIM can be used to change its position.
Alarm In/Out Connector Reference
For ALARMS IN/OUT pin connector reference, see Alarm I/O and Master/Slave
Chassis Connections in Chapter 2 of Prisma II Chassis Installation and Operation Guide,
part number 713375.
SLAVE MODULE
MASTER MODULE
ENABLE
CONTROL
ALARM
RELAY
ALARM
RELAY
MASTER/
SLAVE
CONTROL
MASTER/
SLAVE
CONTROL
M
S
M
S
To make a module a MASTER, set the
Master/Slave control to "Master" (the default).
The state of the slave input is ignored.
To make a module a SLAVE, set the
Master/Slave control to "Slave". The slave
w ill not turn on unless the master module
is removed or has a critical fault.
NORMAL
CRITICAL FAULT
CRITICAL FAULT
NORMAL
Inter-module connections are made on
the back of the chassis using
"ALARMS IN" and "ALARMS OUT"
connectors.
ENABLE
CONTROL
A high
enables the
module
(turns on the
receiver)
A high
enables the
module (e.g.
turns on the
transmitter)
transmitter)
OFF
ON
OFF
ON
Part of
ALARMS IN
connector
ALARMS IN
connector
Part of
ALARMS IN
connector
Part of
ALARMS OUT
connector
ALARMS OUT
connector
Part of
ALARMS OUT
connector