72
LAI Command Set
The master queries whether the slave 01 is connected to the bus.
Master query: [M01V07C6\r
Command structure:
[ Start
signal
(5Bh)
1
Byte
M
transmitter identification M (4Dh) for master or
S
(53h)
for
slave
1
Byte
01
Slave
address
01…99
2
Byte
V
Identifier
data
group
1
Byte
07
Length of the data field
2 Byte
C6
Check sum
2 Byte
\r
End-character
CR
(0Dh)
1
Byte
In order to increase the security of the data, a check sum is transmitted. The check
sum is the 1 byte sum of all hex values from the start character to the last character in
front of the check sum.
Slave answer: [S01V0EMINI CCAD\r
Slave 01 is connected to the bus, and the device is a MINI CC. The slave command has
the „MINI CC“ data group, which is 7 bytes long. These 7 bytes plus the 7 bytes in
front of the data group produce a data field length of 14 bytes = 0Eh byte.
Namur-Commands
IN_PV_00\r\n
Request temperature Tinternal (jacket)
IN_PV_02\r\n
Request temperature Texternal (proess)
IN_SP_00\r\n
Request temperature set-point
IN_SP_05\r\n
Request current analogue set-point
OUT_SP_00\r\n
Send set-point xxx.xx
START\r\n
Start
temperature
control
STOP\r\n Stop
temperature
control
STATUS\r\n
Request device status
STATUS Single
digit
-1
Alarm
/
Warning
Manual Stop 0
OK / standby / manual stop
Manual Stop 1
OK Temperature control / air-purging
Remote Stop 2
Temperature control stopped remotely
Remote Stop 3
Temperature control started remotely
Data flow control: The commands are not buffered. A new command may be sent as
soon as the reply to the previous command has been received. If no reply is expected,
then there should be a pause of 500 ms.
