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2 15 RS-485
2 15 RS-485
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
16
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
16
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
16
TX1
TX1
TX1
TX1
TX2
TX2
TX2
TX2
Terminator
220 ohms / 0.5W
Terminator
220 ohms / 0.5W
Max. 247 units can be linked
Max. 247 units can be linked
RS-232
PC
SNA10A or
SNA10B
SNA10A or
SNA10B
Figure 2.17
RS-485 Wiring
Figure 2.17
RS-485 Wiring
RS-485 to RS-232
network adaptor
RS-485 to RS-232
network adaptor
RS-485
Twisted-Pair Wire
Twisted-Pair Wire
2 16 Analog Retransmission
2 16 Analog Retransmission
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
16
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
16
+
+
+
+
+
+
+
+
Load
Load
Load
Load
Load
Load
0 - 20mA,
4 - 20mA
0 - 20mA,
4 - 20mA
1 - 5 V, 0 - 5V
0 - 10V
1 - 5 V, 0 - 5V
0 - 10V
Do not exceed 500 ohms total load
Do not exceed 500 ohms total load
Retransmit Current
Retransmit Current
Minimum load must be greater than 10K ohms.
Minimum load must be greater than 10K ohms.
Retransmit Voltage
Retransmit Voltage
Figure 2.18 Analog
Retransmission Wiring
Figure 2.18 Analog
Retransmission Wiring
Indicators
PLC's
Recorders
Data loggers
Inverters etc.
Indicators
PLC's
Recorders
Data loggers
Inverters etc.
Indicators
PLC's
Recorders
Data loggers
Inverters etc.
Indicators
PLC's
Recorders
Data loggers
Inverters etc.
23
UM9300 2.0
UM9300 2.0