Operating instructions

Operation

10.3 Device with key panel

SIMATIC Panel PC 677B

Operating Instructions, 05/2007, A5E01035609-01

10.3.4 External keyboards

The keyboard layout has been set to "English/USA international." If you use a keyboard with

a layout other than the "English/USA international" layout, the key codes of the internal and

external keyboards might no longer correspond.

10.3.5 Using the direct control key module

The direct control key module is a module that is intended for use with the SIMATIC Panel

PC 677B (exclusively for variants with an integral membrane keyboard). Digital events can

be assigned to the function keys and softkeys (F1 to F20 and S1 to S16) of the membrane

keyboard via this module. This means that a digital input of a PLC can be activated at the

press of a key over PROFIBUS. The module is implemented as a PROFIBUS DP slave.

Functionality

The direct control key module is used to expand the functional scope of the SIMATIC Panel

PC 677B with the following features:

● Up to 32 function keys/softkeys on the membrane keyboard of the Panel PC can be

scanned over PROFIBUS as direct keys.

● Up to 16 additional keys from an external control panel can be connected if required.

● There are 16 digital outputs for activating checkback signal lamps (by the PLC over

PROFIBUS DP) in external control panels.

All direct control keys can be scanned over PROFIBUS DP from the PLC.

Software control

The direct control keys on the Panel PC are programmed using the "Key pad" software tool.

The codes for all keys of the Panel PC 677B can be changed using this tool. It can also be

used to assign the direct control key functionality to all function keys and softkeys of the

Panel PC. The "Key Pad" software for the direct control key module is supplied on a floppy

disk and on the "Documentation and Drivers" CD for the Panel PC 677B.

Assembly

The direct control key module can be ordered separately from the Panel PC. It can be

retrofitted in the immediate vicinity of the Panel PC: Either on a standard mounting rail (the

mounting equipment required is included in the package with the direct control key module)

or directly using four screws on a wall /front panel / control panel. Detailed mounting

instructions are included with every direct control key module on paper and with every Panel

PC 677B on the "Documentation and Driver" CD.