4.3
Interfaces
The WS 400-30/WS 400-50 flexible operator panels have one parallel and two serial interfaces
(20mA and RS 232). The serial and the parallel interfaces can be assigned at the same time.
Seven bits and the strobe signal are used to transmit the key codes. In the case of GRACIS,
eight bits and one strobe signal are used. The parallel interface shares a connector with the
20mA interface.
Mains Connection
X5
X6
X4
X2
X1
WS 400-50
Rear View
X1
Parallel and TTY interface
X2
V.24 interface
X4
24-volt supply voltage and keyboard selection
X5
Key-operated switch
X6
Connected through 1:1 to the sub-D socket on the front (e.g. for a programmer)
X18 Programming unit keyboard (with GRACIS only)
Because of the short connecting cable, the keypad expansion unit must be set up directly
below the monitor.
a a a a
a a a a
a a a a
a a a a
X18
a a a a a a
a a a a a a
a a a a a a
a a a a a a
a a a a a a
a a a a a a
a a a a a a
a a a a a a
a a a a a a
A
B
24 V
0V
a a a a a
a a a a a
a a a a a
a a a a a
a a a a a
0V
24V
a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a
Screen Ground
Potential Balancing
a a a a a a a a a a a a a a
a a a a a a a a a a a a a a
a a a a a a a a a a a a a a
a a a a a a a a a a a a a a
Screen Ground
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
Maintenance Connector (Monitor)
Keypad Expansion Unit for the WS 400-50
a a a a a a a a
a a a a a a a a
a a a a a a a a
a a a a a a a a
X1001
©
Siemens AG 1992 All Rights Reserved 6ZB5 440-0KP02
4 - 5
WS 400-30/WS 400-50 (Description)
