Seite 34
RS485 Interface
capaNCDT 61xx/IP
5.2.4
Setting the RS485 Address
The RS485 address of controller can be changed with this telegram:
Master:
SD
0x68
LE
0x09
LE
rep
SD
rep
DA
x
SA
x
FC
0x43
DSAP
0x37
SSAP
0x3E
new_addr
x
ID_Hi
0x0
ID_Lo
0x0
Lock
0x0
FCS
x
ED
0x16
DA
Destination Address (= old Slave address)
SA
Source Address = Master Address (e.g. 0x01)
FCS
Checksum (sum of all bytes without SD, LE, LErep, SDrep, FCS, ED; without overflow, only
8 bits)
New_addr New address (in range 1…126)
Answer Slave (short acknowledgement), on success:
SC
0xE5
No response:
No response indicates that an error has occurred in the address alignment. The controller still has the old
address.
The new address is valid only after a reboot of the controller.