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.
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