Device
and operation
CPC307
C P C 3 0 7 U s e r M a n u a l
48
© 2 0 2 2 F a s t w e l v . 0 0 6
Figure 4.17. b) RS-422/485 transmitter with bias elements and with terminating resistors (for module 4x versions)
Figure 4.17. c) Pin assignment of the XP18 connector (for module versions 4.
х and lower)
COM1 port is routed to the XP10 connector (IDC2-10, 2-row male connector with a pitch of 2 mm).
COM2 is routed to the XP16 connector (IDC2-10, 2-row male connector with a pitch of 2 mm).
Pin assignment of the XP10 connector is given in the Table 4.15.
Pin assignment of the XP16 connector is given in the Table 4.16.
2 x Leotronics 2073-3102 connectors are installed on the module.
The recommended mating part is Leotronics 2039-3101 (ribbon cable press-on socket) or
Leotronics 2022-2102 (socket) and 2023-2000 set of contacts.
The maximum number of modules that can be connected to the RS-485 network together with the
CPC307 module is 128, provided that the input impedance of the RS-485 drivers is minimum 96
k
Ω
. The maximum number of CPC307 modules combined within a single RS-485 network is no
more than 16.
XP18 - connection of terminating
resistors for COM1, COM2 ports in
RS-422/485 modes
Enabling Rtt for
ТХ-/ТХ+ lines (COM2)
Enabling Rtt for
ТХ-/ТХ+ lines (COM1)
Enabling Rtr for
RХ-/RХ+ lines (COM2)
Enabling Rtt for
ТХ-/ТХ+ lines (COM2)
Enabling Rtr for
RХ-/RХ+ lines (COM1)
Enabling Rtt for
ТХ-/ТХ+ lines (COM1)