Toshiba G7 - Manual (Page 26)

G7 ASD Multi-Protocol Communication Option and PG Feedback Option Manual 19
9. Profibus Interface
This section applies to ASD-MULTICOM-A option boards only.
9.1 Feature Summary
The Multicom interface provides a wide array of network data access and drive control features.
Combined with the flexible configuration and high-speed data transfer capabilities of the Profibus
network, this allows powerful networked control and monitoring systems to be designed. Some of the
main features provided by the Multicom interface which allow for this control and configurability are
briefly described here:
Protocol
Profibus DP (Decentralized Periphery) as specified in European standard EN 50170. The Multicom
interface can also co-exist simultaneously on networks using Profibus-FMS.
Network Baud Rates
Supports all Profibus baud rates from 9.6kbaud to 12Mbaud. The network baud rate is automatically
detected and continuously monitored during operation; no parameter settings are necessary.
Power Supply
Self-contained. Powered directly from the connected drive. No external power supply devices or
connections are required.
Isolation
The drive is fully optically isolated from the Profibus network. By using optically isolated connections,
grounding differential problems are eliminated and noise immunity characteristics are greatly improved.
Global Control Functions
• Freeze mode: Input (monitor) data values are held constant within the Multicom interface 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 Multicom interface 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 Multicom interface (if selected at time of
unit commissioning). In the event of a disconnection from the Profibus network or loss of the network
master, the Multicom interface will automatically set its control data to 0.