Micromod MOD: MODCELL Multiloop Processor 2002N Model C and Associated Hardware User Manual
Page 60
MODCELL Multiloop Processor
COMMUNICATIONS CONNECTIONS
Figure 4-4. Typical Modbus Connections for 2032N RS-485, 2-Wire Module used as a Master
BASE INSTRUMENT
+
-
COM
RXTX
-
RXTX+
S32
BASE INSTRUMENT
LOWER
TERMINAL
HOUSING
2032N RS-485 MODULE
(Module Location 32)
DATA
PLCC
SEL
CLK
GND
+5V dc
75LBC176D
3
6
4
7
5
1
2
A
B
2
1
10
12
11
Xmit Enab
XMIT
RCV
560
Ohm
120
Ohm
Other Slaves
Modbus Slave
5V dc
Power
Supply @
25 mA
RXTX
-
RXTX+
120
Ohm
COM
Modbus
Master
2032N RS-485
(Location 32)
Last Slave
560
Ohm
S32
1
2
B
Note: All resistors are 0.25W
Isolated
Common
Isolated
+5V dc
5
4
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