Detailed descriptions
16.3 Displays and operator panel
SIMATIC Rack PC 847B
154
Operating Instructions, 06/2008, A5E02203168-01
16.3
Displays and operator panel
16.3.1
Operating panel - Layout and function
The operator panel is interconnected with the motherboard using a 26-pin connecting cable.
Operator panel
Item Description
(1) USB port
(only the top USB contact is
used)
(2) 9-pole pin header
Connection to the motherboard
(x420)
(3) External reset connector
(4) Connection to the motherboard
(x46)
(5) LEDs
(6) On/off pushbutton
Single-pole pushbutton
(7) Reset button
Single-pole pushbutton
(8) USB port
16.3.2
Pin assignment of the OP connectors
External Reset (3), type: JST B2B-PH-SM3-TB
Pin no.
Short name
Meaning
Input / output
1
PWR Good
External reset, (IO low max. 30 mA)
2
GND
Ground
The device is reset when pins 1 and 2 (for example, by means of a pushbutton) are short-
circuited. It remains in this state until the short-circuit is cleared.
Note
Contact Customer Support or the Repair Center for detailed information on pin assignments
of the interfaces.