Expansions and configuration
10.3 Installing PCI / AT format PCBs
SIMATIC Rack PC 840 V2
Operating Instructions, Edition 05/2006, A5E00248055-04
10-5
10.3
10.3
Installing PCI / AT format PCBs
10.3.1
Notes on the modules
Notes on module specifications
The device is designed for use with modules conforming to AT/PCI specifications. PCI
modules with 5 V and 3.3 V supply voltage can be operated. The permitted dimensions of
the modules are found in the dimensional drawings section.
Note about long PCI modules
Before long PCI modules can be inserted into the guide rails, they must be fitted with an
extender (this should be supplied with the long PCI board).
10.3.2
Installing an expansion module
Preparation
Disconnect the device from mains.
Installing expansion modules
How to install an expansion module (PCI / AT format):
1 Open the device.
2 Removing module bracket (1)
3 Remove the relevant steel slot
cover (2).
4 Insert the expansion module
(3) into the relevant slot.
5 Screw down the steel slot
cover (2) for the expansion
module.
6 Insert the module bracket
again.
7 Loosen free module bracket
(4), mount and screw down on
the expansion module
8 Close the device.
Notes on the allocation of resources
Due to the number of functions on the motherboard, there are no reserved interrupts for PCI
modules. If the new expansion module requires exclusive resources, you have to disable the
functions on the motherboard. For information on allocated resources, refer to the system
resources section. For information on how to disable motherboard functions, refer to the
BIOS Setup. Information on the assignment of PCI IRQs to the PCI slots is found in the
"Advanced Menu" or "Bus Board" section.
PCI graphics modules with an expansion ROM of up to 48 kB can be used.
