54
73ET/74ET/75ET USERS MANUAL EM-7353-0003B Rev.5
7.1.2
CONNECTING TO THE 7xET
SYSTEM CONFIGURATION
As shown in Figure 7.1.2a, the R2K-1 is connected to 7xET’s COM port via a straight RS-232C cable in order to
convert RS-232C into RS-485. R5-NM1 and other modules, up to 15 in total, can be connected via RS-485 twisted-
pair cables.
Remark: For use of Discrete Output Modules (model: R5-DCxx) with the 74ET and 75ET, these Discrete Output
Modules must be mounted between Slot No.1 and No.8. No.9 and higher number slots of R5-BS09 (9-position
base) or R5-BS16 (16-position base) cannot be used.
Figure 7.1.2a: System configuration example for the R5 series.
MODBUS WIRE CONNECTION
Modbus wires are connected to the front terminal block as shown in Figure 7.1.2b.
Figure 7.1.2b: Modbus wire connection.
ADD.
DIP SW
1
2
3
4
5
6
7
8
1
OFF OFF OFF OFF OFF OFF OFF OFF
2
ON
OFF OFF OFF OFF OFF OFF OFF
3
OFF
ON
OFF OFF OFF OFF OFF OFF
4
ON
ON
OFF OFF OFF OFF OFF OFF
5
OFF OFF
ON
OFF OFF OFF OFF OFF
6
ON
OFF
ON
OFF OFF OFF OFF OFF
7
OFF
ON
ON
OFF OFF OFF OFF OFF
8
ON
ON
ON
OFF OFF OFF OFF OFF
9
OFF OFF OFF
ON
OFF OFF OFF OFF
0
ON
OFF OFF
ON
OFF OFF OFF OFF
A
OFF
ON
OFF
ON
OFF OFF OFF OFF
B
ON
ON
OFF
ON
OFF OFF OFF OFF
C
OFF OFF
ON
ON
OFF OFF OFF OFF
D
ON
OFF
ON
ON
OFF OFF OFF OFF
E
OFF
ON
ON
ON
OFF OFF OFF OFF
F
ON
ON
ON
ON
OFF OFF OFF OFF
RS-485, Modbus RTU
RS-232C
straight
RS-485
R5-NM1
R5-NM1
R2K-1
7xET
R5-SV2W
R5-TS1S
R5-SV2W
R5-SV1S
R1M-GH2
T1 (+)
T2 (–)
T3
T4 (SG)
R2K-1
DA
DB
DG
SLD
FG
R5-NM1
DA
DB
DG
SLD
FG
R5-NM1
Table 7.1.1d: Front DIP switch setting: Node address.
Choose a number from 1 to F. The R5-NM1 itself can
set up to 256 numbers, however, is limited to 16 (1 -
F) in conjunction with the 7xET.
Содержание 75ET
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