M2M-710D User Manual (Version 1.00, Mar/2009)
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2.2 Wiring Instructions
The communication interface includes RS-232, RS-485 and Ethernet. The wiring instructions
are described in section 2.2.1, 2.2.2 and 2.2.3.
2.2.1 RS-232 connection
There are two types of RS-232 ports, DTE (Data Terminal Equipment, like PC, Serial
Printers, PLC, and Video Cameras) and DCE (Data Circuit-Terminating Equipment, like
modem) type, and that the signal names and pin numbers are the same, but signal flow is
opposite!
The M2M-710D module is a DTE and the user can uses “3-wire” RS-232 or “5-wire” RS-
232 to connect. When connecting the M2M-710D to a DCE device, the user just needs to
match the signal names. When connecting the M2M-710D to a DTE device, the user
needs to use a crossover cable (TX crosses to RX, GND to GND), as shown in the figure.
Figure 5 connection of RS-232 with 3-write
Figure 6 connection of RS-232 with 5-write
2.2.2 RS-485 connection
The RS-485 wiring diagram is shown in figure 7.
Содержание M2M-710D
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Страница 27: ...M2M 710D User Manual Version 1 00 Mar 2009 PAGE 24 Figure 22 Standard Config page...
Страница 35: ...M2M 710D User Manual Version 1 00 Mar 2009 PAGE 32 Figure 34 Pair connection one server to one client...
Страница 40: ...M2M 710D User Manual Version 1 00 Mar 2009 PAGE 37 7 Dimensions Unit mm...
Страница 41: ...M2M 710D User Manual Version 1 00 Mar 2009 PAGE 38 Installation...