BECKHOFF CX1000 - Manual (Page 34)

Fitting and wiring
32 Embedded PC
Mechanical Assembly of the base module
The installation of the modules takes place in three steps:
1. The Sequence of the Modules
The CPU basic module with system interfaces, which are factory-installed on the left side, is extended with the power
supply unit on the right and with the fieldbus connection (master or slave) left side if available. The mounting of an
filedbus module is described on the next page.
2. Assembly with Other Modules
The attachment of the individual modules is done by simple plugging them together (FIG. 1). Care must be taken that
the plug of the PC104 interface is not damaged.
When correctly assembled, no significant gap can be seen between the attached housings.
FIG. 1: Engaging of the Modules
3. Engaging on the top-hat rail
On the bottom of the modules, there is a white tension strap, which is connected with a latching mechanism. These
tension straps must be pulled down before attaching to the mounting rail. This can be done with a slotted screwdriver
and a small rotation. (FIG. 4). After engaging the module on the top-hat rail successfully (FIG. 5), the tension straps
must be shifted into the starting position again (FIG. 6).
FIG. 4: Tension straps down FIG. 5: Engaging on the top-hat rail