Siemens SINUMERIK 840Di - MCI Board Extension

06.03
2.3 MCI board extension
2-56
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
2.3 MCI board extension
2.3.1 Module
The MCI board extension provides the following functions as an optional
expansion board of the MCI board:
– Four binary inputs (isolated)
– Four binary outputs (isolated)
– Two measuring inputs (isolated)
– Two handwheels (non-isolated).
X4: MCI board extension
X121: Cable distributor
PCI bus (mechanical)
*) locking screws
Internal thread: UNC 4-40
*)
*)
Fig. 2-6 MCI board extension
Designation Order No. (MLFB)
MCI board extension (option) 6FC5 222-0AA00-0AA0
Caution
Never plug or remove the cable distributor at the X121 interface of the mod-
ule under voltage.
Before you plug or remove the cable connector, switch off the PCU (shut down
Windows NT correctly!). Otherwise, short circuits might occur on the module, as
a result of which the module could be destroyed.
Order number:
2 Hardware Descri
p
tions