
© EPRAD Incorporated
6.9 EXCHANGE STATUS Command
Client
þ
eCNA
The EXCHANGE STATUS command can be used by the client to exchange status records with the
eCNA. Most of the codes in the eCNA status record are individually available with the
STS
command.
Command
CMD,XST,
psn
,
record
,
checksum
<CR><LF>
EXCHANGE STATUS Command Message Format
Parameter
Description
CMD,
Start of Command string (This parameter is always “CMD”).
XST,
Exchange Status Command string (This parameter is always “XST”).
psn
,
Packet sequence number (0 to 65535). Can be used to match responses with commands, otherwise always 0.
record
,
Client Status Record. (This record must contain all of the following comma delimited code strings).
code 1,
code 2,
code 3,
code 4
,
code 5
Device (client) name. ASCII Text. Max length = 8 characters.
“STY” = Start Yes. “STN” = Start No. Transition from STN to STY starts the eCNA.
“SPY” = Stop Yes. “SPN” = Stop No. Transition from SPN to SPY stops the eCNA.
“OK” = No fault. “FLT” = Fault. Transition from OK to FLT faults the eCNA.
“NO” = No. “NXT” = Add 1 to Cue. Transition from NO to NXT cues the eCNA.
checksum
Checksum (0 to 65535). Unsigned 16-bit decimal sum of all preceding characters or wildcard ‘??’
<CR>
Terminating carriage return. (ASCII control character, 0x0D).
<LF>
Terminating line feed. (ASCII control character, 0x0A).
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eCNA-10 Operation and Installation Manual Version 1.270-00