Direct Key Interface - Siemens SINUMERIK 840D sl TCU 30.3 Equipment Manual

Table 5-6
5.1.5

Direct key interface

X11 on the operator panel (OP) fronts can be used to fetch the state of the direct keys. The
connection of a 20-pin ribbon cable allows the direct keys to evaluate the following components:
• Direct key module (DTM)
• X70 in the machine control panels (MCP, MPP) and the handwheel connection module (HAM)
• X205 on the Thin Client Unit (TCU)
The signals are then forwarded to the control over the various communications networks.
Note that DTM and HAM can be operated only with PROFIBUS DP.
Figure 5-1
TCU 30.3
Equipment Manual, 03/2023, A5E40874197B AD
Allocation of the LVDS display interface
Connector Pin
1/2
3
4
5/6
7
1 2
8
9/10
11
12
19 20 13/14
15
16
17
18-20
Assignment of the direct keys to the vertical softkeys of an operator panel front
Name Type
GND -
RXIN10-
O
RXIN10+
GND -
RXIN1-
O
RXIN1+
GND -
RXIN2-
O
RXIN2+
GND -
RXCLKIN-
O
RXCLKIN+
GND -
P12VF VO
5.1 Pin assignment of the interfaces
Meaning
Ground
LVDS output signal Bit 0 (-)
Bit 0 (+)
Ground
LVDS output signal Bit 1 (-)
Bit 1 (+)
Ground
LVDS output signal Bit 2 (-)
Bit 2 (+)
Ground
LVDS cycle clock sig‐ (-)
nal
(+)
Ground
+12 V fused
Connection
37