Rack Extender Module Accessories
Original instructions
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Introduction
The following figure illustrates accessories used to connect BMXXBE0100 modules of a main local rack and an extended rack: 
1
extension cable 
2
line terminators
Extension Cables
CAUTION
INRUSH CURRENT
Insertion and extraction of an extension cable must only be done with all the station elements switched off (racks, PC, etc.)
Failure to follow these instructions can result in injury or equipment damage.
The extension cables TSXCBY•••K or BMXXBC•••K are equipped at each end with a male 9-pin SUB D connector, which connects to the female 9-pin SUB D connector on the rack extender modules.
The TSXCBY•••K cables use straight connectors:
The BMXXBC•••K cables use connectors angled at 45°:
NOTE: To connect two rack extender modules located in an enclosure, the use of BMX XBC •••K cables with connectors angled at 45° is recommended.
The predetermined length of extension cables is given by the 3 figures in the cable reference:
Cable reference
Length
Straight connectors
TSXCBY010K
1 m (3.28 ft)
TSXCBY030K
3 m (9.84 ft)
TSXCBY050K
5 m (16.40 ft)
TSXCBY120K
12 m (39.37 ft)
TSXCBY180K
18 m (59.05 ft)
TSXCBY280KT
28 m (91.86 ft)
Angled connectors
BMXXBC008K
0.8 m (2.63 ft)
BMXXBC015K
1.5 m (4.92 ft)
BMXXBC030K
3 m (9.84 ft)
BMXXBC050K
5 m (16.40 ft)
BMXXBC120K
12 m (39.37 ft)
Line Terminators TSXTLYEX
The extended bus must be fitted with a line terminator at each end.
Line terminators are made up of a 9-pin SUB D connector and a cover containing the adaptation components. They are mounted on the 9-pin SUB D connector on the extension module at each end of the line.
Illustration
CAUTION
INRUSH CURRENT
Insertion or extraction of a line terminator must only be done with all the station racks switched off.
Failure to follow these instructions can result in injury or equipment damage.
Line terminators are labeled A/ or /B. An extended rack needs to use one line terminator labeled A/ and one labeled /B. If you terminate the unused connector in the main rack with anA/ terminator, then you need to terminate the unused connector in the last rack with a /B terminator.
The following figures illustrates the possible choices to install the TSXTLYEX line terminators according to their label in different bus extensions.
Line terminators with Modicon X80 racks only: 
1
X80 main rack 
2
first X80 extended rack 
3
last X80 extended rack 
4
BMXXBE1000 modules in each rack 
5
TSXTLYEX line terminator in the main rack and the last rack 
6
BMXXBC•••K or TSXCBY•••K extension cables between each rack
Line termintors with both Modicon X80 and Premium extended racks: 
1
X80 main rack 
2
first Premium extended rack 
3
last Premium extended rack 
4
BMXXBE1000 module 
5
TSXTLYEX line terminator in the main rack and the last rack 
6
BMXXBC•••K or TSXCBY•••K extension cables between each rack