Panel Pc 877: Computer Unit And Control Unit - Siemens SIMATIC Panel PC 677 Operating Instructions Manual

2.2

Panel PC 877: Computer unit and control unit

2.2
Structure
The device is available in two different configurations:
• Centralized configuration: Computer unit and control unit form an entity.
• Distributed configuration: Computer unit and control unit are in separate locations.
Principle
In a centralized configuration, the computer is secured to the back of the control unit with two
mounting rails.
Figure 2-2
1
2
Short description
The device is available with different control units which are distinguished by the size of the
display and by the membrane keyboard or touch screen.
Keyboard variants
• Color display with backlighting:
• Membrane keyboard with alphanumeric keys, numeric keys, cursor keys and control keys
• Function keys and softkeys
• Integrated mouse
• LEDs for power supply, temperature, softkeys, <Shift> and <ACK> keys
• Front-mounted USB 2.0 port for connecting external I/O modules. The front-mounted
SIMATIC PC Panel PC 677/877, Control Unit
Operating Instructions, Edition 04/2005, A5E00407724-01
Panel PC 877 as a complete device with centralized configuration
Control unit
Computer unit
– 12'' TFT technology with 800 x 600 resolution
or
– 15'' TFT technology with 1024 x 768 resolution
USB port is sealed and unusable for some device variations.
2.2 Panel PC 877: Computer unit and control unit
Description
2-3