to pop up its description.
The operation of an instance of this Service Interface Function Block
(SIFB) type is the same as that of the DM_CLT
SIFB type. However, its RQST output and RESP
input are of types MGT_REQ and
MGT_RSP, respectively, which
lend themselves to more efficient encodings than the STRING
-encoded XML RQST output and RESP input of
the DM_CLT type. Additionally, the USTRING
type of this SIFB type's DST output provides just as
efficient an encoding for the 7-bit US-ASCII character set as the STRING
type of the corresponding output of the DM_CLT type,
while retaining the ability to encode multi-byte character sets.
An instance of this type is automatically substituted for an instance
of the DM_CLT type as the MGR block of a PRXY_RES resource when
the MGR_ID of the associated remote Device specifies the
fbmgt2 encoding
scheme, e.g., MGR_ID := "fbmgt2://192.168.2.1:61499".