MCE2035: User manual
Version: 2011-05-17, rev.: 0a
Page: 19
8.6 Profibus-DP connector
The Profibus-DP module is equipped with a nine pole female sub-D connector (J1) for
connection to the Profibus-DP network. The connector is a standard Profibus-DP connec-
tor. Termination of the Profibus should take place in the sub-D connector (male) of the ca-
ble. The specific terminals in the connector have the following function:
J1 TERMINALS
FUNCTION
J1.1 Not
used
J1.2 Not
used
J1.3 RS485-A
(
positive
line) (Siemens designation: B line)
J1.4
Request to Send (RTS)
J1.5
0 VDC (Gnd)
J1.6 +5VDC
(Vout)
J1.7 Not
used
J1.8 RS485-B
(
negative
line) (Siemens designation: A line)
J1.9 Not
used
Note
that some companies use different designations for the RS485-A and the RS485-B lines. Therefore the
polarity of the lines has been listed.
8.7 Hardware Selftest
During power-on the Profibus-DP module will perform a hardware selftest. The test will
cause the light emitting diodes D1, D2 and PBE to turn on and off shortly, one at a time.
8.8 Update times
Please note that update times across the Profibus-DP communication depends on the specific
Profibus-DP configuration (selected baudrate, number of slaves, scan times etc.).
