2 |
Module Locations
Follow the guidelines below when planning module locations in a remote drop.
Remote I/O Scanner
Locate the Remote I/O Scanner in rack 0, slot 1, next to the power supply.
Bus Transmitter Module
A Bus Transmitter Module (BTM) can be located in any slot of rack 0; however, there must be no empty slots between the Bus Transmitter and the Remote I/O Scanner. It is recommended that the Bus Transmitter be located in slot 2, next to the Remote I/O Scanner.
Bus Receiver Module
In a multiple±rack remote drop, locate a Bus Receiver Module (BRM) in slot 1 of each expansion rack, next to the power supply slot.
I/O and Option Modules
Generally, I/O and option modules can be installed in any slot. Some exceptions are noted below.
Analog Expanders
A high±level analog input module and its associated expander modules must be installed in the same rack of a remote drop. Locate the high±level analog input module in the lowest slot position of the group. Locate the expander modules to its right. A second high±level analog input module cannot be located between a high±level analog module and its expander modules. It must either be placed to the left of the first analog module, or to the right of the last expander module.
Analog output modules, discrete I/O modules, and/or special±function modules may be located between the analog input module and any of its expander modules.
Empty Slots in the Rack
Empty slots are permitted between modules, with two exceptions:
A.There can be no empty slots to the left of a Bus Transmitter, analog, PCM, GDS, or ADS module.
B.If, in the future, modules will be placed in the empty slots and a Hand±held Monitor will be used to automatically reconfigure the remote drop, locate empty slots to the right in the rack. Otherwise, automatic reconfiguration will change the I/O references assigned to the boards already there.
REMOTE DROP | a44753 |
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Chapter 2 Installation |
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| EMPTY | 27 | |||||||||
