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9
Global Control Functions
• Freeze mode
: Input (monitor) data values are held constant within the PBDP-110
until the next “freeze” command or an “unfreeze” command is
received. Used primarily for synchronized monitoring of multiple
Profibus nodes.
• Sync mode
: Output (control) data values are held constant within the PBDP-
110 until the next “sync” command or an “unsync” command is
received. Used primarily for synchronized control of multiple
Profibus nodes.
• Clear_Data
: All output (control) data values are cleared to “0”.
Network Watchdog
A network watchdog function is always operating within the PBDP-110. 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 (if
selected at time of unit commissioning).
Indicators
• 1 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.
• 1 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.
• 1 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 -