User manual

IEC61131 User and Reference Manual
April 22, 2008
357
setregss
Set value of signed short integer register
Description
The setregss function writes the input signed short integer value to the specified Modbus
register. The function writes to one Modbus register when the integer value is written. If the
register is found, the integer assigned to that register is updated. If the register is not found,
nothing is done.
The validity of the specified Modbus register is not checked. It is assumed that address is an
input or holding register. Note that if the register is assigned to a Dictionary integer variable,
this function writes to the high word.
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
value
setregss
Q
Arguments
Inputs
Type
Description
address
Integer
Modbus register assigned to a signed short integer value.
Address may be a Network Address assigned to an integer
variable in the Dictionary, or address may be assigned to a C
Application signed short integer variable using a database
handler, or address may be a register from the Permanent
Registers..
value
Integer
Value to write to Modbus register.
Outputs
Type
Description
Q
Boolean
TRUE if 0 < address < 65535.
FALSE for all other cases.
See Also
getregss