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Commissioning
3.2 Flowmeter connection using RS-232
1. Referring to the schematic below, wire the RS-232 Interface cable.
Note
Many newer Laptop PCs are not equipped with serial ports, having USB ports only.
These PCs will require a USB RS-232 adapter that can be purchased commercially. Not
all of these adapters are suitable.
with the adapter from Radio Shack (part#26-183).
2. Connect the cable between the flowmeter and the PC using either the 9-pin, 25-pin or
USB-to-RS-232 cable connector, depending upon the port's architecture.
3. Refer to the flowmeter manual for details for accessing the Installation Menu.
RS-232 Interface Cable - RS-232 Connectors (use 9-pin or 25-pin)
The figure below is the schematic of the serial interface cable (MLFB P/N 7ME3960-0CS00)
needed to make the physical connection between the flowmeter and your PC. The wire ends
for the flowmeter terminations are stripped for easy insertion into TB2. Note that both
connectors have their CTS pin shorted to the RTS pin (pins 4-5 on 25-pin connector and pins
7-8 on 9-pin connector).
①
TB1
②
9-PIN SOLDER SIDE
③
25-PIN SOLDER SIDE
④
25-Pin Serial Connector
⑤
9-Pin Serial Connector
⑥
CABLE P/N 1015CPC-N
Figure 3-3
RS-232 Interface Cable Wiring
20
All manuals and user guides at all-guides.com
Siemens has found the best performance is achieved
⑦
⑧
⑨
⑩
⑪
⑫
Operating Instructions (Compact), 12/2008, CQO:QSG010 Revision A
Red Wire
White Wire
Black Wire
TB2 of Flowmeter
RX To Flowmeter
TX From Flowmeter
SITRANS FUH1010 Quick Start
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