Siemens D7-SYS - Page 337

Communications configuring
3-248 System- and communication configuring D7-SYS - SIMADYN D
Edition 12.2003
• Input STC connection is not listed here. For STC = 1, the length
specification for the message text always corresponds with the
maximum length; for STC = 0, it corresponds to the actual message
text length.
SNV=TRUE (message numbers available)
STM=TRUE (message text available)
SSF=TRUE (standardized format)
Contents Message structure
(max. 108 bytes)
Net data structure Data format No. of data
Spontaneous ID Unsigned8 1. variable unit Unsigned8 2
Sequence number Unsigned8
Message type descrip. 1 Octet 2. variable unit Octet-String 2
Message type 1 Octet
Prefix Floating-Point 3. variable unit Floating-Point 3
Suffix Floating-Point
Measured value Floating-Point
Measured value
dimensions text
8 characters 4. variable unit Visible-String 92
Message instant 24 characters
Message text max. 60 characters
Table 3-75 Standard format with number and text
SNV=FALSE (message numbers not available)
STM=TRUE (message text available)
SSF=TRUE (standardized format)
Contents Message structure
(max. 100 bytes)
Net data structure Data format No. of data
Spontaneous ID Unsigned8 1. variable unit Unsigned8 2
Sequence number Unsigned8
Message type descrip. 1 Octet 2. variable unit Octet-String 2
Message type 1 Octet
Measured value Floating-Point 3. variable unit Floating-Point 1
Measured value
dimensions text
8 characters 4. variable unit Visible-String 92
Message instant 24 characters
Message text max. 60 characters
Table 3-76 Standard format without number with text