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REDUNDANT CONFIGURATIONS
REDUNDANT CONFIGURATIONS
E - 2
I-E96-613A
®
the antenna to the redundant transceiver. The INFI-NET to
Plant Loop Transfer Module Executive Block (INIPT02), func-
tion code 203 in the
Function Code Application Manual
,
explains how to configure the executive block when using
redundant transceivers.
Voltage levels and polarities of enable signals to transceivers
and other communications equipment vary. Refer to the appli-
cable user manuals for the operating specifications of trans-
ceivers or other communication equipment before making any
connections to the IMDSO01, IMDSO02, IMDSO03 or
IMDSO04 Digital Slave Output Modules, or IMDSM05 Digital
Slave I/O Module.
Redundant Termination Devices
Redundant configurations can be with or without redundant
termination units or modules. In both cases, one or both serial
ports can be used for data transfer depending on the needs of
the application. Figures
through
show redundant
interfaces using various termination unit or module configura-
tions.
Figure
illustrates redundant IPT modules using a single
NTMP01 Multi-Function Processor Termination Unit. In this
configuration, the IPT modules share a single termination unit
and communicate through one or two serial channels. The pri-
mary IPT module controls the termination unit.
Figure E-1. Redundant Communication Equipment Connections
PRIMARY
SECONDARY
INIPT02
IMDSO0_
INNIS01
IMMPI01
INIPT02
IMDSO0_
INNIS01
IMMPI01
P2
NTMP01
NKTU01
NKTU11
NKTU01
NKTU11
P1
NTDI01
SELECT
ENABLE
ENABLE
NTDI01
A1
A1
–
–
–
–
–
–
–
–
+
+
+
+
+
+
+
+
A2
A2
A3
A3
A4
A4
P1
NKTU01
NKTU11
NKTU01
NKTU11
P1
P5
P6
ANTENNA
SWITCH
PRIMARY
TRANSCEIVER
REDUNDANT
TRANSCEIVER
MODEM
TP21185A