SMAR if303, Руководство по эксплуатации, техническому обслуживанию и инструкциям, Страница: 21 / 52

Configuration
3.5
Relative
Index
Parameter Mnemonic
Object
Type
Data Type Store Size Access
Parameter
usage/
Type of
transport
Default
value
Down-
load
Order
Mandatory /
Optional
(Class)
View
_1
22
SECONDARY_VALUE
_1_UNIT
Simple Unsigned 16 N 2 r,w C/a mA - O (B)
23
SECONDARY_VALUE
_2
Record DS-33 D 5 r C/a 0 - O (B)
24
SECONDARY_VALUE
_2_UNIT
Simple Unsigned 16 N 2 r,w C/a % - O (B)
25 SCALE_IN Array Float S 8 r,w C/a
20.0
4.0
- O(B)
26 SCALE_OUT Array Float S 8 r,w C/a
20.0
4.0
- O(B)
27
MAX_SENSOR_VALU
E
Simple Float N 4 r,w C/a 0.0 - O (B)
28 MIN_SENSOR_VALUE Simple Float N 4 r,w C/a 0.0 - O (B)
29 TERMINAL_NUMBER Simple Unsigned 8 S 1 r,w C/a 0 - O (B)
30 LIN_TYPE Simple Unsigned 8 S 1 r,w C/a 0 - O (B)
31
LOW_FLOW_CUT_OF
F
Simple Float S 4 r,w C/a 0 - O (B)
32
FLOW_LIN_SQRT_POI
NT
Simple Float S 4 r,w C/a 0 O (B)
33-40 RESERVED
41 BACKUP_RESTORE Simple Unsigned 8 S 1 r,w C/a 0 - O (B)
42 XD_ERROR Simple Unsigned 8 D 1 r C/a 0x10 - O (B)
43 MAIN_BOARD_SN Simple Unsigned 32 S 4 r,w C/a 0 - O (B)
44 EEPROM_FLAG Simple Unsigned 8 D 1 r C/a FALSE - O (B)
45
FACTORY_GAIN_REF
ERENCE
Simple Float S 4 r,w C/a 0 - O (B)
46 ORDERING_CODE Array Unsigned 8 S 50 r,w C/a - - O (B)
Table 3.2 - Parameter Attribute
IF303 - CYCLIC CONFIGURATION
The PROFIBUS-DP and PROFIBUS-PA protocols have mechanisms against communication
failures between the slave device and the network master. For example, during initialization, these
mechanisms are used to check these possible errors. After powering up the field device (slave), it
can cyclically exchange information with the class 1 master, if the parameterization for the slave is
correct. This information is obtained using the GSD files (supplied by the device manufacturer, it
contains their descriptions). Through the commands below, the master executes all initialization
process with the PROFIBUS-PA device:
•
Get_Cfg: uploads the slave configuration on the master and checks network configuration;
•
Set_Prm: writes to the slave parameters and executes the parameterization network;
•
Set_Cfg: configures the slaves according to its outputs and inputs;
•
Get_Cfg: another command, where the master checks the slave configuration.
All these services are based on the information obtained from slave gsd files. The GSD file from
IF303 shows details such as, hardware and software revision, device bus timing and information
about cyclic data exchange.