Station Data; Integer Data (16-Bit Integer) - Siemens 353 User Manual

Data Mapping

6.2 STATION DATA

A station contains some data that pertains to the entire station and some to individual loops. Station data, available
over the network, is part of the station function block (STATN) configuration and is mapped to fixed locations in
Modbus registers or coils. Loop data (detailed in the next section) can be associated with an ODC "Controller," an
ODS "Sequencer," an ODA "Analog Indication", an ODD "Discrete Indication", or an ODP "Pushbutton
Operation" operator display.
Much of the analog data is available is two formats. The first is 16-bit values, scaled consistent with previous
legacy controller products, enabling integration into existing legacy systems. This data type also provides Modbus
masters, unable to handle 32-bit floating point, a method for obtaining data from the station.
The second is the standard 32-bit IEEE floating point format consistent with the actual data in the station. This data
type is contained in two consecutive registers or parameters.
•
The LSW is first and the MSW second.
•
Boolean values are available in coils.
•
String data, formatted as 2 ASCII characters per word with the left-most character in the most significant byte,
containing tag, units, and message information.
Most Station data is 'Read Only' except as noted in Section 6.2.1 Integer Data.

6.2.1 Integer Data (16-bit Integer)

Code R/W Description
GDS R Global Data Size (LIL)*
ST R Station Type
SSW R/W Station Status Word
SE R/W Station Error
NCL R No. of Control Loops (# of ODC)
NSL R No. of Seq. Loops (# of ODS)
RAM R RAM Size (size in K bytes)
CBT R Controller Board Type
CBSR R Controller Board Software Rev. #
EBT R Expander I/O Board Type
EBSR R Exp. I/O Board Software Rev. #
RBT R Remote I/O Board Type (A-1)*
RBSR R Remote I/O (A-1) Software Rev. #*
NBT R Network Board Type (B-1)*
NBSR R Network (B-1) Software Rev. #*
OAT R Option Board A Type (A-2)*
OASR R Option A (A-2) Software Rev. #*
OBT R Option Board B Type (B-2)*
OBSR R Option B (B-2) Rev #*
OFT R Operator Faceplate Type
DRN R Model 353 Database Rev. No.
CWT R Computer Watchdog Timer (sec)
KSR R Kernel Software Rev. #
CT R Cycle Time (msec)
LxT
R Loop - Type
(0-none, 1-controller, 2-sequencer, 3-analog ind., 4-discrete ind., 5-pushbuttons)
MSLCP R/W Modbus Seq. Loop Config. Pt
SA R/W Station Address
Station Data that applies to other 353 controllers and does not apply the 353 "Design Level B."
*
6-2
Range
7-256 ($0007-$0100)
6 ($0006)
(see Station Status Word)
0-32767($00000-$7FFF)
0-255($0000-$00FF)
0-255($0000-$00FF)
0-65535($0000-$FFFF)
(see below)
(see below)
(see below)
(see below)
(see below)
(see below)
(see below)
(see below)
(see below)
(see below)
(see below)
(see below)
(see below)
0-32767($0000-$7FFF)
0-1000 ($0000-$03F8)
(see below)
0-32767($00000-$7FFF)
(0-5)
0-25 ($0000-$0019)
0-250 ($0000-$00FA)
UM353-1B
Register (MB)
n/a
40001
(see coils)
40002
40003
40004
40005
40006
40007
40008
40009
40010
40011
40012
40013
40014
40015
40016
40017
40018
40019
40020
40021
40022
40023-40047
40048
40049
April 2012