Chapter 15 Input/Output instructions
386 Rockwell Automation Publication 2080-RM001D-EN-E - February 2015
KEY_READ_REM checks Key status on a Remote LCD module when the user
display is active. This is only available for the Micro820.
KEY_READ_REM operation
• KEY_READ_REM is supported for Micro820 controllers only.
• This function block can be used to check Key status on Remote LCD
module when user display is active (LCD_REM instruction is used to make
User Display Active). When User display is not active, KEY_READ_REM
instruction flags an error.
• P-BUTTON property in LCD Function File shall be activated; otherwise
all key status will be FALSE.
• Only single key presses are supported for the KEY_READ_REAM
instruction; two-key press combinations are not supported.
KEY_READ_REM arguments
Parameter Parameter type Data type Description
Enable Input BOOL Function enabled.
TRUE = Enable
FALSE = Disable
KEY_READ_REM Output BOOL TRUE: Remote LCD Key data is read successfully.
FALSE: Enable is false, there is an error reading.
Remote LCD Key Data or User Display is not active.
Sts Output UINT Status of the KEY_READ_REM operation.
See KEY_READ_REM status codes on page 388.
KeyData Output UDINT Remote LCD KeyPad Data.
See KeyData bitfields table on page 388.
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