PEAK COMMUNICATIONS RCU100 Installation And Operating Handbook page 15

TCP Port Status Message
This message is sent to the unit, when the host computer wishes to query the TCP port number, subject to the
fitting of the Ethernet option.
Message
Byte No.
1
2
3
4
5
6
7
The unit then responds with the following message:
Message
Byte No.
1
2
3
4
5
6
10
11
TCP Port Status Message
This message is sent to the unit, when the host computer wishes to change the TCP port setting of the unit,
subject to the fitting on the Ethernet option. The unit does not need to be in remote mode for this to be
achieved.
The layout of the configure message follows that of the status reply shown above.
Message
Byte No.
1
2
3
4
5
6
10
11
Issue 3.15
Set Value /
(example)
02
7
?
4
'2'
?
03
Set Value /
(example)
02
11
?
5
'2'
"4000"
?
03
Set Value /
(example)
02
11
?
6
'2'
"4000"
?
03
RCU100 and RCU200 redundancy control units
Length Description
(bytes)
1 STX
1 No of bytes in message
1 Address
1 Message instruction
1 TCP port sub instruction
1 Checksum
1 ETX
Length Description
(bytes)
1 STX
1 No of bytes in message
1 Address
1 Message instruction
1 TCP port sub instruction
4 TCP Port number
1 Checksum
1 ETX
Length Description
(bytes)
1 STX
1 No of bytes in message
1 Address
1 Message instruction
1 TCP port sub instruction
4 TCP Port number
1 Checksum
1 ETX
Page 15