Specifications

sigmadue - IEC 61131-3 Function Block Library
158
5-3-29 MB_SLV_WR_DWORD
FB Prototype MB_SLV_WR_DWORD
Input parameters
Output parameters
Description This Function Block writes the DWORD value passed with DATA parameter to the
memory area corresponding to the passed register (
REGISTER ). The output of
the module (
OPRS ) is used to detect if the operation is performed correctly.
The setting
AD_MODE allows the user to select if the REGISTER input base is 0
(
AD_MODE = FALSE ) or 1 ( AD_MODE = TRUE). The default value for
AD_MODE is TRUE.
Reference
tables
Here are reported the range of the parameters used by the function block.
Protocol
OPRS
Label Type Description
PROTOCOL ASCON_SERIALPROTOCOL Reference Protocol
REGISTER UINT Register
DATA DWORD Data
AD_MODE BOOL
Addressing Mode Setting
(default value = TRUE)
Label Type Description
OPRS BOOL Function block result
PROTOCOL
REGISTER
DATA
AD_MODE
ASCON_SERIALPROTOCOL
UINT
REAL
BOOL
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USINT OPR
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Protocol Description
SLAVE1 Protocol Modbus Slave 1
SLAVE2 Protocol Modbus Slave 2
OPRS Description
0 Service executed correctly
1 Address not allowed
3 Protocol number not valid