2 Equipment Description
2.10 Serial Device Interface IOP (SDI)
R688
HPM High-Performance Process Manager Service
65
December 2020
Honeywell
EIA-232 and EIA--422/485 interfaces
The EIA-232 interface is a point-to-point interface to which only one serial device can be connected. The
EIA-422/485 interface can be configured as a multidrop interface to which several serial devices can be
connected.
EIA-232 interface cable length
The EIA-232 cable is limited to a distance of 15 meters (50 feet). The cable must be supplied by the user
and terminate in a DB-25 connector.
EIA-422/485 cable length limitation
EIA-422/485 cable is limited to a distance of 305 meters (1000 feet). However, the total length can be
1200 meters (4000 feet) with the appropriate interface cable.
Power Adapter installation
The Power Adapter can be installed on any available FTA Mounting Channel that is within the 50-meter
(164-foot) maximum cable length requirement between the IOP and the Power Adapter. The Power
Adapter has the same dimensions as an A size (6 inches) FTA. Model MU-KFTAxx interface cable is
used.
SDI FTA installation
The Serial Device Interface FTA can be installed in the same cabinet as the Serial Device Interface IOP,
or externally, up to 305 meters (1000 feet) from the Power Adapter. The FTA is an A-size (6 inches)
FTA and installs on a standard FTA Mounting Channel.
FTA to Power Adapter interface
The Serial Device Interface FTA to Power Adapter connection is made using either model
MU-KLAMxx cable for internal cabinet installation or model MU-KLXxxx cable for external cabinet
installation. The suffix “xx” or “xxx” represents the length of the cable in meters.
The model MU-KLAMxx cable has two individually shielded, twisted pair wires. The shield must be
connected to ground at the Power Adapter end of the cable only.
The model MU-KLXxxx external cabinet cable has four wires with a single braided shield. The braided
shield must be connected at both the Power Adapter and FTA ends of the cable.
Model MU-TSDT02 FTA
The model MU-TSDT02 Serial Device Interface FTA accommodates the model 8142-2084 or 8142-
2184 Toledo Weigh Cell device, manufactured by Toledo Scale Inc., through its EIA-232 (RS-232)
interface.
Model MU-TSDM02 FTA
The model MU-TSDM02, assembly number 51303932-202, Serial Device Interface FTA accommodates
up to four model MU-MASX02 Manual/Auto Station devices, manufactured by Honeywell Inc., through
its EIA-422/485 (RS-422/485) interface.
Model MU-TSDU02 FTA
The model MU-TSDU02 Serial Device Interface FTA accommodates up to four model MU-MASX02
UDC 6000 devices, manufactured by Honeywell Inc., through its EIA-422/485 (RS-422/485) interface.
Cabling information
For more detailed information on cable selection, see the
Process Manager I/O Installation
manual or
the
High-Performance Process Manager Planning
manual.
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