Teledyne 6 RU Chassis, Руководство по эксплуатации

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116 202058 REV AA 6 RU SSPA Chassis Operations Manual
9.2.2.4 Data Tag
The data tag specifies the type of internal resource of information needed to be ac-
cessed on the amplifier. The data associated with certain tags is read only. Therefore,
only the “Get” command byte would be associated with these data tags. The data tag
byte values are given in
Table 9-3
.
9.2.2.5 Error Status / Data Address
This byte is a tag extension byte and specifies the first data element of the tagged da-
ta. If the Data Length is more than 1 byte, then all subsequent data fields must be ac-
cessed starting from the specified address. For example, if the requester wants to ac-
cess the amplifier’s unique network address, it should set data tag 0 (Systems settings
tag) and data address 8 (see Systems Settings Details table). If the following Data
Length field is more than one (1), then all subsequent Settings will be accessed after
the Unique Network Address. When the Response Frame Data Address is omitted, this
byte position is replaced with the Error Status fields. The various error codes are given
in
Table 9-4
. Note that the Request and Response frames are different.
Tag Name
Byte
Value
Minimum valid
length of Data
Field
Description
System
Tag Settings
0 1 byte
This tag allows accessing various system settings
on remote unit. Host access status: Full Read/Write
access. Settings can be modified at any time. Some
settings may require hardware reset of the remote
SSPA unit.
System
Threshold Tag
1 2 bytes
This tag allows access to the critical unit thresholds.
Host access status: Full Read/Write access. New
thresholds are in effect immediately after change.
System
Conditions Tag
3 1 byte
This tag allows access to the unit’s internal condi-
tions flags, such as fault status or current system
status. Host access status: Read only. This type of
data cannot be set or modified remotely.
ADC Channels
Access Tag
4 2 bytes
This tag allows access to the unit’s internal Analog
to Digital converter. Host access status: Read only.
This type of data cannot be set or modified remote-
ly.
Reserved 2 N/A
This tag is reserved and not used for SSPA applica-
tions.
Table 9-3: Data Tag Byte Values