9
PBDP-110 and communicate via the Profibus network. Just plug it in – it’s that
simple.
Network Watchdog
A network watchdog function is always operating within the PBDP-110. If the
watchdog is activated at network commissioning, then in the event of a
disconnection from the Profibus network or loss of the network master, the
PBDP-110 can automatically switch any attached drives over to local control.
Indicators
• One green LED is provided to indicate when the PBDP-110 has achieved
the DATA_EXCHANGE state with the Profibus network master. This
serves as a convenient indicator that the Profibus master and PBDP-110
are configured properly and are exchanging data.
• One green LED on the MMI interface port. The context is application-
specific, but under normal operation blinks at a 0.5Hz rate as a “heartbeat”
indicator. Also indicates data transfer when used with the Flashloader
programming utility.
• One green LED on each of the Channel A and Channel B drive
connectors, which indicate that the port is receiving power from the
corresponding drive.
Profibus Network Connector
The network interface is a standard DB9 female connector with the following
signals provided:
Pin
Number
Function In/Out
3 Profibus network “B” (positive) data line In/out
4
RTS signal – direction control for fiber optic network
interface
Out
5
DGND – power supply ground internally connected to
the interface board’s isolated ground
-
6
VP – power supply +5v internally connected to the
interface board’s isolated P5.
-
8 Profibus network “A” (negative) data line In/out
9
RTS signal ground reference – internally connected to
the interface board’s isolated ground
-
1, 2, 7 No connection -
In addition to the above signals, the metallic housing of the DB9 connector is
connected to the shield section of the interface board. The shield section is
attached to the metal ground terminal on the bottom of the unit, where a
ground wire can be attached to connect the Profibus network cable shield to
ground. Refer to section 4 of this document for more information related to
grounding.
