Specifications
Operations Manual, Redundant System Controllers 209351 REV B 77
7.2.2.5 Data Address / Error Status / Local Port Frame Length
This field is a tag extension byte and specifies the first table 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 requestor wants to ac-
cess the amplifier’s unique network address, it should set data tag 0 (System set-
tings tag) and data address 8 (see Table 7-6, System Settings Details table). If the fol-
lowing Data Length field is more than 1, then all subsequent Settings will be
accessed after the Unique Network Address.
Important! In the Response Frame Data Address filed replaced with the Error Status
information. The various error codes are given in Table 7-3.
Tag Name
Data
Tag
Byte
Value
Minimum
valid
length of
the Data
Field
Description
System
Settings Tag
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 of
the settings may require hardware reset of the remote
RCP unit.
System
Thresholds Tag
1 2 Bytes
This tag allows access to the critical unit thresholds.
Host access status: Tag have read only status.
System
Conditions Tag
3 1 Byte
This tag allows access to the unit’s internal conditions
flags, such as fault status or current system status. Host
access status: Read only. This type of the data can not
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 the data cannot be set or modified remotely.
Packet Wrapper 6 1 Byte
Bytes in Data fields under this tag will be redirected to a
RCP Local Port without any change. Data Address field
indicates how many bytes (if any) RCP should return
from remote device response. Response frame for this
tag is not guaranteed. It will depend on remote device
response.
Reserved 2 N/A This tag is reserved.
Reserved 5 N/A This tag is reserved for factory use only
Table 7-2: Data Tag Byte Values