User manual

IEC61131 User and Reference Manual
April 22, 2008
287
getregsl
Get value of signed long integer register
Description
The getregsl function returns the signed long integer value that is assigned to the two
consecutive Modbus registers starting at address. The lower numbered register must be
assigned to the higher order word. The value returned has a range of -2,147,483,647 to
2,147,483,647.
The validity of the specified Modbus register is not checked. If the registers are found, their
current values are used to form the signed long integer value returned. If both registers are
not found, then 0 is returned.
This function provides a method for accessing database registers defined in a C Application
database handler, such as the RealFLO database handler This function may also be used to
access the Permanent Non-Volatile Registers. See the section Modbus Addressing for
more details.
address
getregsl
value
Arguments
Inputs
Type
Description
address
Integer
First Modbus register of 2 consecutive registers assigned to a
signed long integer value. Address may be a Network Address
assigned to a integer variable in the Dictionary, or address may
be assigned to a C Application signed long integer variable
using a database handler or address may be a double register
from the Permanent Registers.
Outputs
Type
Description
value
Integer
Signed long integer value read at the specified Modbus
registers.
Zero if both registers are not found..
See Also
setregsl