FieldServer FS-8704-13 用户手册

下载
页码 19
FS-8704-13 GE-SRTP  
 
Driver Manual 
 
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042 
Visit our website: www.fieldserver.com          E-mail:  support@fieldserver.com 
 
Page 6 
 
4.4.2  Driver Specific Map Descriptor Parameters  
 
Column 
Title 
Function 
Legal Values 
Node_Name 
Name of Node to fetch data from 
One of the node names specified in 
“Client Node Descriptor” above 
Data_Type 
Data type 
 
Use one of the Data Types specified in brackets. 
Discrete Inputs (%I) 
Discrete Outputs (%Q) 
Discrete Temporaries (%T) 
Discrete Internals (%M) 
Genius Global Data (%G) 
Analog Inputs (%AI) 
Analog Outputs (%AQ) 
Registers (%R) 
%SA Dis crete 
%SB Discrete 
%SC Discrete 
%S Discrete (%S) 
Length 
Length of Map Descriptor 
 
Ensure that the length does not exceed the table length 
in the PLC. 
1 - 1000 
Address  
Starting address of read block / write block 
 
The 1
st
 element of each Data type Table is referred to 
as address one. 
 
1 , 2 , 3  
Positive whole numbers 
Format 
Use to override the default format for obtaining data. 
Bit tables are by default read by reading whole bytes 
at a time (If the Length is 10 then 10 bytes of data are 
read and placed in 10 data array locations) 
 
If you wish to read bits instead then use this parameter 
. (If the Length is 10 then 10 bits are read and each bit 
is stored in its own location.) 
Bit, Byte 
 
The format for %AI,%AQ and %R 
cannot be changed. 
 
4.4.3  Timing Parameters  
 
Column Title 
Function 
Legal Values 
Scan_Interval 
Rate at which data is polled 
>0.1s