SSR-1U User’s Manual
Rev -, 27 Dec 2019
© 2019 Slerj, LLC
47
www.slerj.com
5.3.5
Query Channel Parameter
Queries to the configuration subsystem are performed using Configuration Query messages.
When a valid query is received, the SSR-1U replies with a Configuration Query Reply.
Configuration Reply uses the same message ID (0x51) as the Configuration Query. The payload
of the reply depends on the request, and available configuration items are listed below.
5.3.5.1
Line
Item
Line
Description
Provides all communication parameters of a channel.
Container
Configuration Query Reply Message
Configuration ID
1
Payload Length
2
Direction
Message Rate
0x10
5 bytes
out
polled
3
Payload
Byte
Offset
Type
Notes
Name
Units
Purpose / Comment
0
U1
CID
1
Configuration ID
1
U1
channel
Channel (1 – 4)
2
U1
line
Line Parameters:
bits 7-6: parity
0 = none
1 = odd
2 = even
bits 5-4: stop bits
0 = 1 stop bit
1 = 1.5 stop bits
2 = 2 stop bits
bit 3: data bits
0 = 8 data bits
1 = 7 data bits
bits 2-0: (reserved)
3
U2
baud
baud/100 Baud rate (divided by 100).
Notes:
1.
Configuration ID is the first byte of the payload in the Configuration Query Reply container
message.
2.
Payload length is the length of the container message payload.
3.
This message is polled using a Configuration Query message with a two byte payload (this
Configuration ID and the channel number).