9-4
Figure 9-5 Frequency Output Wiring – Output Voltage Versus Load Resistance
9.2.3 Wiring to a Remote Host
Terminals 33 and 34 support Modbus/RS-485 communication with a remote host. For an example of
wiring, see Figure 9-6. For terminal information, see Table 9-2.
Figure 9-6 Wiring to a Remote Host
Open circuit output voltage = 15 VDC ±3%
High
le
ve
l out
put
v
o
lta
g
e (
v
olts
)
0
1000
2000
3000
4000
5000
Load resistance (ohms)
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RS-485/B
RS-485/A
Remote host
Instruction and Operation Manual
X-CM-QmBS-eng
Part Number: 541B052AHG
June, 2008
Section 9 I/O Wiring DIN AN Transmitter
QmBS Sensor / QTA Transmitters
