Allen-Bradley 1747-KE, User Manual

Page: 34 / 139

Publication 1747-UM005B-EN-P - March 2006
3-8 Communicate with the Interface Module
The group number is used by the interface module to create a
half-duplex DF1 address for each node on the DH-485 network. The
DF1 addresses are the octal equivalent of an eight bit binary word
with the three most significant bits corresponding to the group
number and the five least significant bits corresponding to the local
network address.
Addresses
The following table lists the devices from the above network along
with their DH-485 local network address and their DF1 multi-drop
address.
Devices and Corresponding Addresses
011 11101
01 111 101
1 7
5
Group Number
(3 in this example)
DH-485 Local Network Address
(29 in this example)
and
combine to make
this binary word
which has this octal value.
(DF1 Multi-drop Address)
Group Device DH-485 Address
(decimal) DF1 Address
(binary) DF1 Address
(octal equivalent)
00 1747–KE 01 00|000|001 001
SLC 500 02 00|000|010 002
SLC 500 05 00|000|101 005
SLC 500 09 00|001|001 011
01 1747–KE 00 00|100|000 040
SLC 500 04 00|100|100 044
SLC 500 03 00|100|011 043
1747–KE 01 01|000|001 101
02 SLC 500 00 01|000|000 100
SLC 500 25 01|011|001 131
SLC 500 16 01|010|000 120
SLC 500 04 01|000|100 104