Siemens Sinumerik 840DiE sl - Page 48

01/2007
2.2 MCI2 board for 840Di sl
2-48
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
Table 2-3 Pin assignment: MPI interface (X102)
Pin
Designation Type
1)
Function
1 Not assigned – –
2 Not assigned – –
3 RS–MPI/DP B RS 485 differential signals
4 RTS O Request to Send
5 GNDext VO External ground
2)
6 P5ext VO Ext. 5V power supply
2)
7 Not assigned – –
8 XRS–MPI/DP B RS 485 differential signals
9 Not assigned – –
1) VO Voltage Output
O Output
B Bidirectional
2) Pin 5 and 6 can only be used to supply the bus termination resistances
S Connecting cable: See Section 3.3.2, Page 3-103
Notice
The PROFIBUS DP (X101) and MPI/DP bus (X102) interfaces are isolated both
from one another and from the PCU.
Interface description of the backup voltage connection (X3):
S Connection: 2–pin plug connector
S Pin assignment
Table 2-4 Pin assignment: Backup voltage connection (X3)
Pin
Designation Type
1)
Function
1 BATT– VI Backup voltage minus
2 BATT+ VI Backup voltage plus
1) VI Voltage input
The diagnostics LEDs ”DP 1” und ”DP 2” are only used to display the internal
status of the MCI board. A diagnosis with regard to the PROFIBUS DP commu-
nication of the interfaces is not possible via the LEDs.
Backup voltage
connection
(X3)
Diagnostic LEDs
(DP1/DP2)
2 Hardware Descri
p
tions