Specifications

Operations Manual, Redundant System Controllers 209351 REV B 87
The RCP2-1200 replies with the following response string.
Byte
Position
Byte
Value
(Hex)
Description
1 AA Frame Sync Byte 1
2 55 Frame Sync Byte 2
3 A Destination Address of PC request originator
4 0 Source address of RCP respondent
5 0 Protocol Version Compatibility Field must always be 0
6 6F Echo of the Originator’s Request ID byte
7 3 Command field for “Get” type response
8 3 “System Conditions” tag indicates which data from respondent included in
response frame.
9 0 Data Address field omitted and replaced with Error status code. 0 in this field
indicates absence of errors.
10 C Data Length field indicates how many data bytes of the “System conditions”
requested from RCP (12 is all available data of “System Conditions” type).
11 0 Data field 1 contains data element 1 of “System Conditions” data type, which
is RCP System Unit1 Fault State. 0 Indicates that Unit 1 is not faulted.
12 1 Data field 2 contains data element 2 of “System Conditions” data type, which
is RCP System Unit2 Fault State. 1 Indicates that Unit 2 is in fault condition.
13 0 Data field 3 contains data element 3 of “System Conditions” data type, which
is RCP System Unit3 Fault State. 0 Indicates that Unit 3 is not faulted.
14 1 Data field 4 contains data element 4 of “System Conditions” data type, which
is RCP System Summary Fault State. 1 Indicates presence of faults in the
system.
15 0 Data field 5 contains data element 5 of “System Conditions” data type, which
is RCP System Power Supply 1 Fault State. 0 Indicates that Power supply 1
is not faulted and functioning properly.
16 0 Data field 6 contains data element 6 of “System Conditions” data type, which
is RCP System Power Supply 2 Fault State. 0 Indicates that Power supply 2
is not faulted and functioning properly.
17 1 Data field 7 contains data element 7 of “System Conditions” data type, which
is RCP System Auxiliary Fault State. 1 Indicates presence of faults on one of
the Auxiliary Inputs.
18 FF Data field 8 contains data element 8 of the “System Conditions” data type.
This data element is reserved for future applications.
19 FF Data field 9 contains data element 9 of the “System Conditions” data type.
This data element is reserved for future applications.
20 FF Data field 10 contains data element 10 of the “System Conditions” data type.
This data element is reserved for future applications.
21 3 Data field 11 contains data element 11 of the “System Conditions” data type,
which is RF Switch 1 state. 3 Indicates that RF Switch 1 is in Position 1.
22 1 Data field 12 contains data element 12 of the “System Conditions” data type,
which is RF Switch 2 state. 1 Indicates that RF Switch 2 is has a fault condi-
tion or its position can’t be reliably determined.
23 8F Arithmetic checksum of bytes number 3 through 22