BECKHOFF C9900-G0xx - Manual (Page 13)

Product description
C9900-G0xx 11
2.4 Connections
2.4.1 Description of the PCBs
This section describes and explains the PCBs for the buttons and their connections. Each PCB has
connection strips to enable customers to use the buttons and the emergency stop. The pin assignment of
the connection strips is shown on each PCB. The circuit diagrams for each of the three PCBs used can
be found in the annex under section 7.4. The connector designations (CONxxx) used in this description
refer to these circuit diagrams.
Emergency stop PCB
Fig. 6: Emergency stop PCB
The emergency stop PCB has a USB (1, CON500) and a K-bus interface (2, CON400). Both interfaces
are used for signal transfer and are assigned ex factory. A further connection strip (3, CON402) is
available for customer use via the two additional N/C contacts of the emergency stop. The connection
strip assignment is shown in Table 1.
Terminal point Description
1 Input N/C contact 1
2 Output N/C contact 1
3 Input N/C contact 2
4 Output N/C contact 2
5 Not used
6 Not used
Table 1: Pin assignment for emergency stop PCB