6.2.4.3
Setup
1.
Wire the MP 924 interface distributor in accordance with fig. 6-7.
For interface conversion RS 232
↔
RS 485 (RS 422), use the
MP 923 interface converter (see chapter 6.2.3).
ATTENTION
The interface cables must be shielded on both ends (connect shield
on MP 924 to protective ground).
ATTENTION
Never connect a terminator.
2.
If several MP 924 interface distributors are used, combine them as
illustrated in fig. 6-7.
3.
Set the connected units to network mode and switch them on.
ATTENTION
The same baud rate must be set on all units for network mode.
ATTENTION
When using an MP 923 interface converter, at least one unit attached
to the first MP 924 interface distributor must be switched on in order
to ensure that power is supplied to the MP 923.
1
B1
B2
B3
MP 924
MP 924
Unit 1
(RS 485 interface)
Unit 8
(RS 485 interface)
Unit 9
(RS 485 interface)
Shield connection
2
5
3
4
1
B1
B2
B3
2
3
4
5
·
·
·
·
·
·
·
·
6
7
8
MP 923
RS 232
RS 485
PC
Fig. 6-7 MP 924 interface
distributor setup
Appendix
6-10
WDP3-01X Ident. no.: 00441109760