FieldServer Fike Cheetah FS-8700-48, Driver Manual

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FS-8700-48 Fike Cheetah Manual Page 19 of 36
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5.4.10 Map Descriptor Example 5 (Specific Device)
In this example, a Map Descriptor has been defined for the storage of the state of one specific device. (Device 20)
// Client Side Map Descriptors
Map Descriptors
Map_Descriptor_Name , Data_Array_Name , Data_Array_Offset , Function , Node_Name , Cheet_Zone , Cheet_DT , Cheet_Device , Cheet_Loop , Length
Device20_L1_Alm
, DA_DI1 , 20 , Passive , Node_A , None , Alarm , 20 , 1 , 256
5.4.11 Map Descriptor Example 6 - Device States as a Numeric Value
In this example the normal or abnormal state of all the devices of loops 1-4 will be stored by this Map Descriptor.
// Client Side Map Descriptors
Map Descriptors
Map_Descriptor_Name , Data_Array_Name , Data_Array_Offset , Function , Node_Name , Cheet_Zone , Cheeet_Loop , Cheet_Device Cheet_DT , Length
CHEETAH23
, DEV_L1_STATE , 0 , Passive , Panel_01 , None , 1 , All , Any , 256
CHEETAH24 , DEV_L2_STATE , 0 , Passive , Panel_01 , None , 2 , All , Any , 256
CHEETAH25 , DEV_L3_STATE , 0 , Passive , Panel_01 , None , 3 , All , Any , 256
CHEETAH26 , DEV_L4_STATE , 0 , Passive , Panel_01 , None , 4 , All , Any , 256
Each Map Descriptor in this example reads
data for one device only. Thus each Map
Descriptor must point to a different Data
Array or as is the case in this example, to a
different location in the same Data Array.
They are passive
because this driver is
a data consumer.
When storing device
data the Cheet_Zone
must be set to None. The driver is node independent; however
Node_A ties this Map Descriptor to a Node
Descriptor which thus connects the Map
Descriptor to a protocol and to a port.
The alarm
state is being
stored.
The Device number
is 20.
The device
belongs to loop1
The Any keyword tells the driver to store the device state as a number
The value of the number indicates the device state. The number is a binary
number and its value is determined by which bits are set.
Bit 0: Alarm
Bit 1: Pre-Alarm
Bit 2: Trouble
The array’s format must be suitable for
storing the state number which can range
from 0-15.
Thus BYTE, UINT16, UINT32 and FLOAT are
suitable formats for the Data Array.